Assertion:The $E^0$  value of $z{n}^{+2}/zn$   is -0.76 V and Zn act as Reducing Agent 
Reason : The  $E^0$ value of $C{u}^{+2}/Cu$  is +0.34 V and Zn act as Oxidising Agent
 

Assertion and Reason is correct and Reason is not correct explanation of Assertion.

Assertion and Reason is correct and correct explanation of Assertion

A and R is false 

A is true but R is false