s-t graphs for two cars

Two drivers A and B cmpare the launching power of their cars. They speed up
from rest at the same position on a straight road.

https://www.sendspace.com/file/mgf9q4

Please verify whether my understanding is correct.


a. Car B is behind car A before t=4s (T)
b. Car B catches car A up at t = 4s. (T)
c. Car B travels a longer distance than Car A during t = 0-4s (F)
d. Car B has a smaller average velocity than car A during t = 0 - 4s (T).

Tks