128. Assume 8 ft3

of air at 100 psi and 100°F are compressed isothermally to a volume of 2 ft3

.

For each end state of the process, find the bulk modulus.

A. 400 and 100 psi B. 400 and 110 psi

C. 400 and 120 psi D. 400 and 130 psi