Solubility of calcium phosphate (molecular mass, M) in water is W g per 100 mL at 25°C. Its solubility product at 25°C will be approximately.

A

$$10^7 \f\frac{W^3}{M}$$

B

$$10^7 \f\frac{W^5}{M}$$

C

$$10^3 \f\frac{W^5}{M}$$

D

$$10^5 \f\frac{W^5}{M}$$