Four combinations of two thin lenses are given in List I. The radius of curvature of all curved surfaces is r and the refractive index of all the lenses is 1.5. Match lens combinations in List I with their focal length in List II and select the correct answer using the code given below the lists.

Choices:

A

P-1, Q-2, R-3, S-4

B

P-2, Q-4, R-3, S-1

C

P-4, Q-1, R-2, S-3

D

P-2, Q-1, R-3, S-4