Three isomeric compounds M, N, and P ($$\text{C}_5\text{H}_{10}\text{O}$$) give the following tests.
(i) M and P react with sodium bisulfite to form an adduct
(ii) N consumes 1 mol of bromine and also gives turbidity with conc. HCl and anhydrous $$\text{ZnCl}_2$$ after prolong heating
(iii) M reacts with excess of iodine in alkaline solution to give yellow crystalline compound with a characteristic smell
(iv) p-Rosaniline treated with sulphur dioxide develops pink colour on shaking with P.
The structures of M, N, and P, respectively are