If you fill your car tire to a pressure of 32 psi (pounds per square inch) on a hot summer day when the temperature is 35⁰C (95⁰∘F), what is the pressure (in psi) on a cold winter day when the temperature is –15⁰C (5⁰F)? Assume no gas leaks out between measurements and the volume of the tire does not change.

a. -13.7 psi
b. 1.8 psi
c. 13.7 psi
d. 27 psi
e. 38 psi