给出一道英语语法练习题目，要求选择正确的形容词形式。



题目: Which sentence is correct?

A. The red truck is more bigger than the blue truck.

B. The red truck is bigger than the blue truck.

C. The red truck is more big than the blue truck.

D. The red truck is biger than the blue truck.
B. The red truck is bigger than the blue truck.