Based on the given information, the correct answer is option 'D'. However, without any further context or details provided, it is difficult to explain the answer in detail. In order to provide a comprehensive response, it is important to understand the context of the question and what is being asked.

If we assume that the question is asking for the correct option among the given choices, we can proceed with the explanation.

Explanation:
We have four options given: 'a)', 'b)', 'c)', and 'd)'. The correct answer is option 'D'. Let's analyze each option to understand why 'D' is the correct choice:

a) No information is provided about option 'a)', so we cannot determine if it is the correct answer or not.

b) Similarly, no information is given about option 'b)', so we cannot determine if it is the correct answer or not.

c) Again, no information is provided about option 'c)', so we cannot determine if it is the correct answer or not.

d) This is the correct answer according to the given information. However, without knowing the details or context of the question, we cannot explain why 'd)' is the correct choice.

In conclusion, the correct answer is option 'D' based on the information provided. However, without any further context or details about the question, it is not possible to explain in detail why 'D' is the correct choice.