Match the materials in Group 1 with their functional applications in Group 2.

Group 1	Group 2
P. Nb3Sn	1. Dielectric
Q. Ga. As	2. Soft magnet
R. Fe - 4% Si alloy	3. Super conductor
S. SiO2	4. Semi-conductor

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

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

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

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

Answer: Option D