Assertion (A) : On cooling in a freezing mixture, colout of the mixture turns to pink from deep blue for a reaction.
`underset(("Pink"))(Co(H_(2)O)_(6)^(2+))(aq)+4CI^(Theta)hArr underset((Blue))(CoCI_(4)^(2-)(aq))+6H_(2)O(l)`
Reason (R) : The reaction is endothermic in formed reation, so on cooling the reaction, deep blue colour appears.

Options

A. If both (A) and (R) are correc, and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct but (R) is not the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If (A) is incorrect, but (R) is correct.

Answer

A

Explanation

Assume, `(a)` is true, hence reaction must be endothermic.