The Speed of Sound in Air at 0 $^{\circ}$ C Is 331 M/s

The speed of sound in air at 0 $^{\circ}$ C is 331 m/s.What is the velocity of sound in air at a temperature of -30 $^{\circ}$ C?

A) 308 m/s
B) 310 m/s
C) 312 m/s
D) 314 m/s
E) 316 m/s