Which of the following statements BEST explains why BOTH facial and dental infections can lead to serious complications for the patient?

A)Antibiotics do NOT work well to combat facial and dental infections.
B)Communication by way of anastomoses and blood flow direction is involved in the spread of infection in the head and neck.
C)Both facial and dental infections have been found to be difficult to detect and treat early.
D)Blood supply is based on a one-to-one relationship of blood vessel to muscle.