This problem can be solved by using the concept of iodoform test and functional isomerism.
Iodoform test - The compound containing - COCH3
or −CH(OH) group will undergo iodoform test.
Thus, X and Y are functional isomers of each other and Y gives iodoform test due to the presence of CH3CO group as indicated. Hence, correct choice is (c).
The correct statement with respect to product Y is