What Is the Standard Cell Potential for This Electrochemical Cell $\rightarrow$

What is the standard cell potential for this electrochemical cell?
It consists of two compartments, labeled C1 and C2.
The temperature is 298 K.
C1 consists of a copper metal electrode immersed in a 0.30 M copper(II) sulfate solution.
C2 consists of a copper metal electrode immersed in a 1.5 M copper(II) sulfate solution.
Cu²⁺ + 2e^- $\rightarrow$ Cu, $E _ { \mathrm { red } } ^ { \circ }$ = +0.34 V

A) +0.34 V
B) -0.34 V
C) 0.0 V
D) +0.68 V
E) More information is needed to decide.