Which compound will yield 5-keto-2-methyl hexanal upon treatment with O3? (a) (b) (c) (d)

Compound B on ozonolysis gives 5-keto-2-methyl hexanal. Ozonolysis can be defined as the oxidation of alkenes, alkynes in presence of ozone to give aldehyde, ketones, or carboxylic acids as a product. Hence, the correct option is (b).