answer ASAP just right option

Rquo generates a transverse wave and measures it to be expressible as the following y=sin(2 7 (x/20+t/10]] If x and y are measured in meters, with t being measures in seconds, what of the following would Rquo say is false concerning the wave? O A The amplitude is 1.0 m. O B. The wave travels with speed 2 m/5. O C The wavelength of this wave is 20 m. O D. The frequency of the wave is 0.1Hz. O E. The wave is traveling in the positive x direction. Rquo is standing on the Latming campus when a campus police car approaches at a speed of 55 m/s. If the car has a siren emitting a sound at 2.30 X Hz. What is the frequency Rquo would hear the sound to be emitted at? The sound speed in air is 343 m/s. 6 A 31.8 Hz O B. 43.9 HZ O C 198 HZ O D. No answer is correct O E. 274 Hz