Match the following materials with the method most commonly used for making their powders.

A. Nickel	1. Carbothermic reduction
B. Tungsten	2. Inert gas atomisation
C. Silicon carbide	3. Oxide reduction
D. Super alloys	4. Carbonyl process

A. A-2, B-3, C-4, D-1

B. A-1, B-3, C-4, D-2

C. A-2, B-3, C-1, D-4

D. A-4, B-3, C-2, D-1

Answer: Option C