If Javier Has Trouble Sleeping, He Usually Gets Up and Munches

Multiple Choice

If Javier has trouble sleeping, he usually gets up and munches on some cookies, pretzels, or dry cereal, and this seems to help him sleep. This sleep-inducing technique

A) precipitates a placebo effect only.
B) increases the amount of tryptophan reaching his brain and increases serotonin levels.
C) is known as the paradoxical intention, since eating should prevent sleep.
D) decreases the norepinephrine and dopamine levels in the brain, resulting in sleep.