**Explanation:**

The correct answer is option B, which is sugarcane.

**Historical Background:**
During the colonial rule, the British East India Company (BEIC) had established its dominance over India. They exploited India's resources, including its agricultural products, to generate wealth for themselves. One such commodity was sugarcane.

**Duty on Sugarcane:**
When sugarcane was exported from India to Britain, it had to pay a duty that was over three times its cost price. This high duty was imposed to protect the British sugar industry, which was facing competition from cheaper Indian sugar.

**Protectionism and British Sugar Industry:**
The British sugar industry faced challenges due to cheaper sugar imports from India. To protect their domestic sugar industry, the British government imposed high tariffs and duties on imported sugar.

**Implications:**
The high duty on Indian sugarcane made it economically unviable for Indian producers to export their sugar to Britain. This had significant implications for the Indian economy as well as Indian sugarcane farmers.

**Impact on Indian Economy:**
The imposition of high duties on Indian sugarcane contributed to the exploitation of Indian resources by the British. It hindered the growth of the Indian sugar industry and prevented it from competing on a level playing field with the British sugar industry.

**Impact on Indian Sugarcane Farmers:**
The high duty on sugarcane made it difficult for Indian farmers to earn a fair price for their produce. It affected their livelihoods and perpetuated the cycle of poverty and dependence on the British.

**Conclusion:**
The imposition of high duties on Indian sugarcane entering Britain was a deliberate economic strategy employed by the British government to protect their domestic sugar industry. This unfair practice had detrimental effects on the Indian economy and the livelihoods of Indian sugarcane farmers.