Involuntary Contraction and Spasms of the Sternomastoid and Trapezius Muscles

Multiple Choice

Involuntary contraction and spasms of the sternomastoid and trapezius muscles can be caused by migraine headaches.Some malocclusions can also cause such spasms.

A) Both statements are true.
B) The first statement is true;the second statement is false.
C) The first statement is false;the second statement is true.
D) Both statements are false.