297. If atmospheric air 14.7 psia and 60°F at sea level, what is the pressure at 14212 ft altitude

if air is incompressible? Note: @ 60°F, the density of air is 0.0763 lbm/ft3

; P1 = 14.7 psia.

A. 5.4674 psia B. 7.5304 psia

C. 7.1696 psia D. 7.1966 psia