Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Water soluble hormones acts on its target cell through second messenger system.
Reasons (R) : The hormone receptor complex on the cell membrane activates G proteins thereby activating adenylate cyclase and catalyzing conversion of ATP to cAMP which activates protein kinases.
In the light of the above statements, choose the most appropriate answer from the options given below :