Find the number of boys and number of girls in the row ?
A sits `18^(th)` from left end of the row and Y sits `11^(th)` from the right end of the row. A and Y interchange their positions, after interchanging the position A's position is `20^(th)` from left end
II. Total 43 student are in the row and all are facing is same direction.

Options

A. If the data in statement I and II together are sufficient to answer the question, while the data in statement III are not required to answer the question.
B. If the data in statement I and II together are sufficient to answer the question, while the data statement II are not required to answer the question
C. If the data in statement II and III are sufficient to answer the question, while the data in statement I are not required to answer the question
D. If the data in all three statement I, II and III together are necessary to answer the question.

Answer

D