Pls help me choose the best answer and explain why thanks

Pls help me choose the best answer and explain why thanks
We can allow you s special discount of 12% on orders exceeding$6000.The world "allow"can be replaced by the following word EXCEPT
A:give B:grant C:offer D:permit
书上答案是D.,试卷答案是A.别人说是B..这题到底选什么啊.,