A student hears a police siren. What would change the frequency that the student hears? Check all that apply.if the student walked toward the police carif the student walked away from the police carif the police car moved toward the studentif the police car moved away from the studentif the intensity of the siren increasedif the intensity of the siren decreased
A
if the student walked toward the police carB
if the student walked away from the police carC
if the police car moved toward the studentD
if the police car moved away from the studentE
if the intensity of the siren increasedF
if the intensity of the siren decreased