Trismus Noted in a Client the Day Following an Inferior

Trismus noted in a client the day following an inferior alveolar nerve block MOST likely results from:

A) Failure to use an aspirating syringe
B) Irritation of the medial pterygoid muscle
C) Accidental injection of the solution near a branch of the facial nerve
D) Allowing the needle tip to rest beneath the periosteum during injection
E) Accidental injection of the solution near a major branch of the trigeminal nerve