Manny Has Soccer Practice Until 7 PM and Then Ballet

Manny has soccer practice until 7 PM and then ballet until 9 PM. Clearly Manny will still have time to complete his homework so long as he can stay awake until 10 PM.
Which of the following is an assumption made by the above passage?

A) Manny's soccer practice will end on time.
B) Manny will go straight home after ballet practice.
C) Manny has one hour or less of homework.
D) Manny's homework is due tomorrow.
E) Manny's homework is a bigger priority than going to sleep by 10 PM.