Match List-I with List-II and select the correct answer:

List-I	List-II
a. Theory of mutation	1. Beadle and Tatum
b. Theory of evolution	2. Jacob and Monod
c. One gene one enzyme hypothesis	3. Darwin
d. Operon concept	4. Hugo De Vries

A. a-3, b-4, c-1, d-2

B. a-4, b-3, c-1, d-2

C. a-4, b-3, c-2, d-1

D. a-3, b-4, c-2, d-1

Answer: Option B