If the Following Half-Reactions Are Combined, What Is the Potential $\rarr$

If the following half-reactions are combined, what is the potential for the spontaneous reaction?
Oxaloacetate^- + 2H⁺ + 2e^- $\rarr$ malate^- = -0.166
NAD⁺ + H⁺ + 2e^- $\rarr$ NADH 11ee7c6d_74e2_e452_ae82_f5f2b4bfa620_TBW1044_11= -0.315

A) -0.481 V
B) -0.149 V
C) 0.0523 V
D) 0.149 V
E) .0481 V