`Ph-CH=CH-overset(O)overset(||)(C)-CH_(3)toPh-CH=CH-CO_(2)H`
Above conversion can be achieved by :

Options

A. `KMnO_(4),Delta` followed by `H^(+)`
B. `I_(2)//NaOH` followed by `H^(+)`
C. `H_(2)//Pt`
D. `LiAlH_(4)`

Answer

B

Explanation

lodoform test.
(a) Oxidative ozonolysis by not `KMnO_(4)`
(b) lodoform test. Only methyl ketones. No reaction with double bond.
( c) `H_(2)//Pt` can reduce only double bond.
(d) LAH oxidizes ketone to `2^(@)` alcohol not to carboxylic acid.