Which is NOT TRUE about the effects of insomnia?

a. When compared to people who do not have insomnia, chronic insomniacs have four times the incidence of automobile accidents.
b. People with insomnia have 35 times the rate of depression as people who sleep well.
c. Most people with fibromyalgia have sleep disturbance characterized by loss of deep-stage sleep.
d. Falling asleep at the wheel causes a third of all accidents that result in fatal injuries.