The Electrochemical Reaction Below at 25°C

The electrochemical reaction below at 25°C.
Ag⁺(0.275 M) + Fe²⁺(0.180 M) Fe³⁺(0.200 M) + Ag(s)

-Refer to Exhibit 17-3. What is the value of the equilibrium constant, K, for the reaction above at 25°C?

A) 1.15
B) 3.17
C) .142
D) Not enough information is given to answer the question
E) None of the above