You Awake to Your Phone Ringing

You awake to your phone ringing. What will need to be true of the next stimulus in your environment if it is going to be detectable to you?

A) The next stimulus must be weaker than your phone ringing.
B) The next stimulus must occur through a different sense (such as sight) .
C) The next stimulus must be strong enough to overcome a slightly hyperpolarized membrane if it occurs immediately following the ringing phone.
D) The next stimulus must occur at least five minutes after the phone ringing.