You Drive Your Car from Salt Lake City to the Mountains

You drive your car from Salt Lake City to the mountains to go skiing.It is a nice day in Salt Lake, with a temperature of 16 °C and an atmospheric pressure of 0.85 atm.In the mountains, it is freezing at -1.0 °C and an atmospheric pressure of 0.70 atm.If the volume of air in your tires is 12 L when you leave the city, what is it in the mountains?

A) -0.91 L
B) 9.3 L
C) 11 L
D) 13 L
E) 14 L