Assertion (A): A reaction which is spontaneous and accompained by decreases of randomness must be exothermic.
Reason (R ) : All exothermic reactions are accompained by decrease of randomness.
A. If both (A) and (R) are correct and (R) is the correct reason for (A).
B. If both (A) and (R) are correct but (R) is not the correct explanation for (A).
C. If (A) is true but (R) is false
D. If both (A) and (R) are false.