A schematic representation of spermatogenesis is given below. Correctly identify A,B,C and D by selecting the option:
A. A-Primary spermatocytes,B-Spermatogonium,C-Secondary spermatocytes,D-Spermatids
B. A-Spermatogonium,B-Secondary spermatocytes,C-Primary spermatocytes,D-Spermatids
C. A-Spermatogonium,B-Primary spermatocytes,C-Secondary spermatocytes,D-Spermatids
D. A-Spermatids,B-Primary spermatocytes,C-Secondary spermatocytes,D-Spermatogonium