The Solubility of Strontium Carbonate (SrCO₃) in Water at 25°C $4.5 \times 10 ^ { - 3 }$

The solubility of strontium carbonate (SrCO₃) in water at 25°C is $4.5 \times 10 ^ { - 3 }$ g/L. What is the K_sp of this sparingly soluble salt?

A) $9.3 \times 10 ^ { - 10 }$
B) $1.13 \times 10 ^ { - 13 }$
C) $2.34 \times 10 ^ { - 17 }$
D) $5.52 \times 10 ^ { - 3 }$
E) $3.12 \times 10 ^ { - 2 }$