Find Ecell at 25°C for the Following Voltaic Cell: Cu(s)

Find Ecell at 25°C for the following voltaic cell: Cu(s) ∣ Cu2+(aq) (0.10 M) || Cu2+(aq) (0.85 M) ∣ Cu(s)
The half-reaction is:
Cu2+(aq) + 2 e- → Cu(s) E° = +0.377 volts

A) +0.0209 V
B) +0.0550 V
C) +0.0275 V
D) -0.0209 V
E) +0.310 V