Which of the following is a difference between riding in a bike trailer and riding a bike? （ ）

Which of the following is a difference between riding in a bike trailer and riding a bike? （ ）

A.

You need to check the tires regularly for a bike trailer.

B.

It is easier to ride in a trailer than riding a bike.

C.

A trailer requires water and wax for cleaning.

D.

A trailer cannot react as quickly as a bike.

正确答案是D