There Is No Toll Charge to Drive on Freeway A If

There is no toll charge to drive on freeway A. If there is freeway congestion at 9 a.m., there will be greater freeway congestion at 11 a.m. if

A) the demand to drive on the freeway is the same at both times.
B) the demand to drive on the freeway at 11 a.m. is greater than the demand to drive on the freeway at 9 a.m.
C) the demand to drive on the freeway at 9 a.m. is greater than the demand to drive on the freeway at 11 a.m.
D) more people carpool at 11 a.m. than at 9 a.m.
E) none of the above.