Solubility of a $M_2S$ salt is $3.5 \times 10^{–6}$ then find out solubility product : -

Question

( A ) $1.7 \times 10^{–6}$
( B ) $1.7 \times 10^{–18}$
( C ) $1.7 \times 10^{–16}$
( D ) $1.7 \times 10^{–12}$