A family trip includes A, B, C, D, E, F. A and C are married with child B. C is not B's mother. E is C's brother. F is B's brother. D is A's daughter.

Question: Which statement is incorrect?
Options:
A. E is the Brother-in-law of A, B. D is the sister of F, C. F is male, D. A is female, E. None is incorrect
Answer: "C"