(A) 'Ar' is used for arc welding of metals or alloys.
(R) Ar provides an inert atmosphere for metal (or) alloys during arc welding

Options

A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B. Both (A) and (R) are true and (R) is not the correct explanation of (A)
C. (A) is true but (R) is false
D. Both (A) and (R) are false

Answer

A