In what way are motor coach groups different from meeting or convention groups？

In what way are motor coach groups different from meeting or convention groups？
A.Motor coach group participants tend to come from farther away.
B.Motor coach group participants are much younger.
C.Motor coach groups are much larger and arrive at the destination by plane.
D.Motor coach groups are smaller and go to a destination for sightseeing.
正确答案：Motor coach groups are smaller and go to a destination for sightseeing.