The tac promoter is made by _____ region of trp promoter and _____ region of the lacUV5 promoter

Q. The tac promoter is made by _____ region of trp promoter and _____ region of the lacUV5 promoter.

A.            10, 35

B.            35, 10

C.            10, 10

D.            35, 35

Answer: 35, 10