Assertion (A). The Infantry Battalion is the most important organisation of the Army.
Reason (R). It can be judged by the fact that no military operation can start or finish without the participation of infantry.
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) A is false but R is true