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

List-I	List-II
a. The unit membrane model	1. Kavanau
b. The mosaic membrane model	2. Robertson
c. The fluid-mosaic model	3. Singer and Nicholson
d. The lipid pillar model	4. Baum

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

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

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

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

Answer: Option C