My Home Is Exactly 5 $\circ$ C
B)25 $\circ$ C
C)20 $\circ$ C
D)15

My home is exactly 5.9 km from Spartan Stadium,where the football team has just scored another touchdown.Since the game is broadcast live,I can see the touchdown on TV,essentially without time delay.The time difference between when I see the touchdown and when I hear the roar from the stadium is 16.9 s.What is the temperature (in degrees Celsius) of the air?

A) 30.2 ^$\circ$ C
B) 25.2 ^$\circ$ C
C) 20.2 ^$\circ$ C
D) 15.2 ^$\circ$ C
E) 10.2 ^$\circ$ C