Match the following:

Process	Characteristics
P. Ultarasonic welding	1. Most commonly used process
Q. Plasma arc welding	2. Use of explosives
R. Thermit welding	3. Highest temperature
S. Shielded metal arc welding	4. Solid state process
	5. Use of chemical energy

A. P-4, Q-3, R-5, S-1

B. P-2, Q-4, R-5, S-1

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

D. P-3, Q-5, R-2, S-4

Answer: Option A