The Net Formation Constant for Tetraamminezinc(II)is 4

Multiple Choice

The net formation constant for tetraamminezinc(II) is 4.1 × 10⁸.What would be the approximate potential of the galvanic cell symbolized below?
Zn(s) /Zn(NH₃) ₄²⁺ (aq,1.0 M) ,NH₃(aq,1.0 M) //Zn²⁺(aq,1.0 M) /Zn(s)

A) 0.76 V
B) 0.00 V
C) 0.51 V
D) 0.25 V
E) 1.02 V