One of the Problems with Multiple Projects Is That

One of the problems with multiple projects is that:

A) put together they take more time than they would if they were due at different times.
B) it's hard to keep track of all of the due dates.
C) if you don't manage your time well, you might find that you have to sacrifice your grade on one in order to do a good job on another.
D) they tend to focus mainly on reading assignments that are due on the same day.