Six persons A, B, C, D, E and F are sitting in a row facing North. A and F are sitting at two extreme ends of the row. B is to the immediate right of A and D is 2nd left of F. What is the position of E with respect to A.

A. E is to the right of A.
B. E is to the left of C.

Which statement is sufficient to answer the question or not.

If B alone sufficient only

I) A and F are sitting at two extreme ends of the row;

=> A, _, _, _, _, F

II) B is to the immediate right of A and D is 2nd left of F.

=> A, B , _, D , _, F

III) the position of E with respect to A.

(A). E is to the right of A.

(B). E is to the left of C.

=> A, B , E , D , C , F

Thus, "If B alone sufficient only" is correct.