How Many Coulombs of Charge Are Required to Cause Reduction

How many coulombs of charge are required to cause reduction of 0.25 mole of Cu²⁺ to Cu?

A) 0.25 C
B) 0.50 C
C) 1.2 × 10⁴ C
D) 2.4 × 10⁴ C
E) 4.8 × 10⁴ C