There are six children playing football namely A, B, C, D, E and F. A and E are brothers. F is the sister of E. C is the only son of A's uncle. B and D are the daughters of the brother of C's father. How is D related to A ?
Choose the correct alternative from the following : - Assertion (A) : Appendix is a vestigial organ in human body. Reason (R) : It does not participate in digestion.