If in a Lead Storage Battery the Reaction at the Cathode

Multiple Choice

If in a lead storage battery the reaction at the cathode is: PbO₂(s) + 4 H⁺ + SO₄^2- + 2e- → PbSO₄(s) + 2 H₂O
How many grams of lead sulfate are formed on one plate if 20. amps average current occurs for 2.0 minutes? Assume 100% efficiency.

A) 0.063 g
B) 0.13 g
C) 3.77 g
D) 7.54 g
E) requires additional information