The correct answer is option 'D' - the 73rd Constitutional Amendment mandated the creation of State Finance Commissions.

Explanation:
The 73rd Constitutional Amendment Act, also known as the Panchayati Raj Act, was passed by the Parliament of India in 1992. This amendment aimed to strengthen and empower the local self-government bodies in rural areas, i.e., the Panchayats. It added Part IX to the Constitution, which contains provisions related to the Panchayats.

One of the important provisions of the 73rd Amendment Act is the creation of State Finance Commissions. These commissions are responsible for making recommendations on financial matters related to the Panchayats.

Here is a detailed explanation of the provisions related to State Finance Commissions under the 73rd Constitutional Amendment:

1. Article 243I: This article mandates the establishment of a State Finance Commission by the Governor of every state within one year of the amendment's enactment. The composition, powers, and functions of the commission are determined by the state government.

2. Composition: The State Finance Commission consists of a Chairman and such other members as determined by the Governor. The members are appointed by the Governor and can include individuals with knowledge or experience in finance, administration, or Panchayati Raj institutions.

3. Functions: The State Finance Commission has several key functions, including:
- Reviewing the financial position of Panchayats and making recommendations on their financial powers, resources, and devolution of funds from the state government.
- Making recommendations on the distribution of taxes, duties, tolls, and fees between the state government and Panchayats.
- Suggesting measures for improving the financial systems and procedures of Panchayats.
- Any other matter referred to it by the Governor in relation to Panchayat finances.

4. Report and implementation: The State Finance Commission submits its report to the Governor, who in turn lays it before the state legislature. The state government is then obligated to take appropriate action on the recommendations of the commission.

In conclusion, the 73rd Constitutional Amendment mandated the creation of State Finance Commissions to review the financial position of Panchayats and make recommendations on matters related to their finances. These commissions play a crucial role in empowering local self-government bodies and ensuring their financial autonomy.