Lauren rode the bus home from the mall on Saturday. She felt the bus accelerate as it left the parking lot, and then the bus turned right. The bus drove east on the freeway for five minutes before exiting, decelerating, and stopping at the stoplight. Then it turned left and slowed to a stop at the end of Lauren's street.

All of these actions describe a change in velocity except
A.
"the bus drove east on the freeway for five minutes".
B.
"the bus turned right".
C.
"she felt the bus accelerate".
D.
"it turned left and slowed to a stop".