A voltaic cell consists of a standard hydrogen electrode in one half-cell and a Cu/Cu2+ half-cell. Calculate [Cu2+] when the cell potential is 0.110 V. Enter your answer in scientific notation.

A) 1.0 x 10⁻3 M
B) 2.0 x 10⁻3 M
C) 5.0 x 10⁻3 M
D) 1.0 x 10⁻2 M