If D is the brother of B, how B is related to C? To answer this question which of the statements is/are necessary?
The son of D is the grandson of C.
B is the sister of D.
A. Only 1
B. Only 2
C. Either 1 or 2
D. 1 and 2 both are required

• Given: D is the brother of B.
  From statement 1, we can detect that D is son of C (son of D is the grandson of C).
  From statement 2, we can detect that B is 'Female' (sister of D).
  Therefore, B is daughter of C.
  
• 11 years agoHelpfull: Yes(2) No(1)