Glucose + Tollen's reagent `to` silver mirror. The process shows:

Glucose reacts with Tollen's reagent to give a derivative of

A compound is heated with zinc dust and ammonium chloride followed by addition of the Tollen's reagent. Formation of silver mirror indicates the presence of following group

Assertion (A) Aldehydes and ketones, both react with Tollen's reagent to form silver mirror. Reason (R) Both, aldehydes and ketones contain a carbonyl group.