The Standard Voltage of the Cell Ag(s) $\mid$ AgBr(s) $\mid$ Br ^- (Aq)m Ag⁺(aq)

The standard voltage of the cell Ag(s) $\mid$ AgBr(s) $\mid$ Br ^- (aq) m Ag⁺(aq) $\mid$ Ag(s)
Is +0.73 V at 25 $\degree$ C.Calculate the K_sp for AgBr.

A) 3.9 *10 ^{- 29}
B) 2.2 * 10¹²
C) 2.0*10 ^{- 15}
D) 5.1 * 10¹⁴
E) 4.6 *10 ^{- 13}