Match applications in Group 1 with the commonly used corrosion protection methods in Group 2.

Group 1	Group 2
P. Sea going vessel	1. Inorganic coating
Q. Undergrciund pipeline	2. Sacrificial anode
R. Electric traction tower	3. Aluminium paint
S. Electric poles	4. Impressed current
	5. Galvanising

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

B. P-2, Q-3, R-5, S-1

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

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

Answer: Option A