concentration

A student weighs out 0.675g of KHP (molar mass = 204 g/mol) and titrates to the equivalence point with 36.78 mL of a stock NaOH solution. What is the concentration of the stock NaOH solution? KHP is an acid with one acidic proton.
a. 0.00331M
b. 0.122M
c. 0.0184M
d. 0.0900M
e. none of these