What is most closely the central idea of the passage below (paragraphs 6–7)?

A. The exchange between the grandmother and the matrons is productive and generates new ideas for all participants to consider.

B. The granddaughter’s position is one of power and authority.

C. Both the grandmother and the matrons use the granddaughter to try to gain power.

D. The granddaughter’s position is complicated because of her dual identity, but this internal conflict may be positive.

The central idea of the passage is not clear without having the actual passage. Please provide the text in order to determine the central idea.