Potassium Fluoride Is Used for Frosting Glass

Potassium fluoride is used for frosting glass. What is the molarity of a solution prepared by dissolving 78.6 g of KF in enough water to produce 225 mL of solution?
MM(KF) = 58.10 g/mol

A) 0.304 M
B) 0.349 M
C) 1.35 M
D) 3.29 M
E) 6.01 M