The Pressure Gauge on a Cylinder Used to Fill Balloons $\circ$

The pressure gauge on a cylinder used to fill balloons with He shows a pressure of 1,275 psi at a temperature of 25 ^$\circ$ C. Assuming the cylinder has a volume of 10 L, how many grams of He does the cylinder contain?

A) 520 g
B) 142 g
C) 6.70 g
D) 37.0 g
E) 4.00 g