一道logic题求助！

A patient complained of feeling constantly
fatigued. It was determined that the patient averaged only four to six hours
per night, and this was determined to contribute to the patient’s condition.
However, the patient was not advised to sleep more.

Which one of the following, if true, would
most help to resolve the apparent discrepancy in the information above?

B. The first two hours of sleep do the most
to alleviate fatigue.

E. Worry about satisfying the need for
sufficient sleep can make it more difficult to sleep.