Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : 
can be easily reduced using
Zn−Hg∕HCl to
Reason R : Zn−Hg∕HCl is used to reduce carbonyl group to
−CH2− group.
In the light of the above statements, choose the correct answer from the options given below: