The Speed of Sound in Air V Depends on the Air

Multiple Choice

The speed of sound in air v depends on the air pressure p and the air density as

A) $\nu \propto \sqrt { p \rho }$
B) $v \propto \sqrt { \frac { 1 } { p \rho } }$
C) $v \propto \sqrt { \frac { p } { \rho } }$
D) $v \propto \sqrt { \frac { \rho } { p } }$