Solve the Problem $\mathrm { p }$ At an Altitude Of $\mathrm { h }$

Multiple Choice

Solve the problem.
-The barometric pressure $\mathrm { p }$ at an altitude of $\mathrm { h }$ miles above sea level satisfies the differential equation $\frac { d p } { d h } = - 0.2 p$ . If the pressure at sea level is $29.92$ inches of mercury, find the barometric pressure at $29,000 \mathrm { ft }$ .

A) 4.99 in.
B) 9.97 in.
C) 89.75 in.
D) 0.09 in.