While standing at a cross walk, a sports car drives past you at 80 m/s. You hear a police car approaching you at 90 m/s, driving in the same direction in an attempt to follow it. Assuming they are all able to hear the police siren, who hears it at the highest pitch?
A. All hear the same pitch
B. The cop in the police car
C. Not enough information to determine
D. The driver of the sports car
E. You