A person on a Haz Mat team will be working for 1.5 hr while breathing oxygen from a pressurized tank. While working, they will be burning energy at a rate of 250 Cal/hr. The tank stores the gas at 20 MPa according to its gauge, and the gas will be breathed at 1 atmospheric pressure. What minimum volume of pressurized oxygen needs to be in the tank? Answer will be exact.

a)    0.39 L

b)   0.17 L

c)    0.76 L

d)   0.52 L

e)    0.91 L