Three structures P,Q and R having seme molecular formula, i.e., `C_(5)H_(8)O.`
Structure (P) shows geometrical isomerism and optical isomerism but not tautomerism.
Structure (Q) shows optical isomerism and toutomerism but not gemetrical isomerism.
tautomerism but not optical isomerism.
The structure of P, Q and R are respectively :
A.
B.
C.
D.
