In testes : 1. Each seminiferous tubule is lined on its inside by two types of cells called male germ cells and Sertoli cells. 2. Sertoli cells undergo meiotic divisions finally leading to sperm formation. 3. The male germ cells provide nutrition to the germ cells. Regarding 1,2 and 3 :

Question

( a ) 1 is incorrect but 2 and 3 are correct
( b ) 3 is incorrect; 1 and 2 are correct
( c ) 1 is correct but 2 and 3 are incorrect
( d ) 2 is incorrect but 1 and 3 are correct