A Patient Reports, "I Can't Sleep, My Throat Is Sore $\degree$

A patient reports, "I can't sleep, my throat is sore, my muscles ache, and my fever is 102.4 $\degree$ F." Which is considered a sign?

A) "Can't sleep"
B) Sore throat
C) Muscle aches
D) 102.4 $\degree$ F fever