Which of the following statements about tremors is incorrect:
a. Tremors are involuntary, rhythmic oscillatory motions, alternating or synchronous contractions of antagonist muscles
b. Beta blockers and deep brain stimulation can help treat tremors
c. Stress and caffeine should be avoided to prevent tremors
d. Intention tremors are caused by damage to synapses in the striatum
e. All of the above are correct