Your Heart Races Every Time You Hear the Phone Ring

Your heart races every time you hear the phone ring because recently you received some distressing news over the phone. One way to eliminate this fearful response to the ringing phone would be to:

A) listen to the phone ring over and over for a whole day.
B) get rid of the phone.
C) change the sound of the phone ringing.
D) have the phone flash a light instead of ring.