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 cellsprovide nutrition to the germ cells. Regarding 1,2 and 3 :

Question

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