The Henry's Law Constant (K) for Carbon Monoxide in Water

The Henry's Law constant (k) for carbon monoxide in water at 25°C is 9.71 × 10^-4 mol/(L·atm) . How many grams of CO will dissolve in 1.00 L of water if the partial pressure of CO is 2.75 atm?

A) 3.53 × 10^-4 g
B) 2.67 × 10^-3 g
C) 9.89 × 10^-3 g
D) 7.48 × 10^-2 g
E) None of these choices are correct.