You're riding your bicycle down the street at a speed of 5m/s. An impatient motorist behind you is traveling in the same direction at 10m/s. As the motorist approaches you, they starts honking his horn. If the actual frequency of the horn is 500Hz, what is the apparent frequency you hear as they approach? Group of answer choices A. 507.37 Hz B. 492.73 Hz C. 485.47 Hz D. 514.53 Hz