The northeast monsoon primarily benefits which region of India during October–December?

southeastern peninsular India

The northeast monsoon is concentrated over Tamil Nadu, Puducherry, coastal Andhra Pradesh, Rayalaseema, south interior Karnataka and Kerala. A, C and D do not represent its principal rainfall belt. A is incorrect: northwestern Himalaya does not satisfy the stated fact or is a different institution/concept. C is incorrect: Thar desert only does not satisfy the stated fact or is a different institution/concept. D is incorrect: upper Ganga plain only does not satisfy the stated fact or is a different institution/concept.