While I was doing problems on reduction of aldehydes and ketones, I encountered this particular question
Here, I know that Clemensen reduction reduces the ketone group to $-CH_2-$ group. But, the answer key has given the option (c). I also know that the mechanism for this reduction is still shaky for the senior high school kid. But, how to deal with substitution like these as in case of this question
In this question option (a) is the answer though this is wolf kishner reduction.
Any suggestions how to solve these reactions?