Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a “triplet” (AIPMT - 2009)

Whose experiments cracked the DNA and discovered unequivocally that a

1.	Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a “triplet” (AIPMT - 2009)
A.	Hershey and chase
B.	Morgan and sturtevant
C.	Beadle and Tatum
D.	Nirenberg and Mathai
Answer» E.