Assertion (A): The equilibrium constant for cyanohydrin formation is `=10^(13)` times greater for cyclo-hexanone than for cyclophentanone.
Reason (R ): For a five-membered ring, reactions are more favourable when a ring C changes from `sp^(3)` to `sp^(2)` because eclipsing interactions are removed.
A. If both (A) and (R ) true and (R ) is the correct explanation of (A).
B. If both (A) and (R ) are true but (R ) is not correct explanation of (A).
C. If (A) is true but (R ) is false.
D. If (A) is false but (R ) is true.
