In Drosophila the XXY condition leads to femaleness whereas in human beings the same condition leads to Klienfelter's syndrome in male. It proves :

Question

( A ) In human beings Y chromosome is active in *** determination
( B ) In Drosophila Y-chromosome decides femaleness
( C ) Y chromosome is active in *** determination in both human beings and Drosophila
( D ) Y chromosome of man have genes for syndrome