各位版友好，下面這一題想請教一下大家
_ anyone wish to access the information on the status of his or her order, the p
A . if
B. Should
C. Whether
D. As though
答案是B
目前正使用Readding for the TOEIC練題，所以沒有詳解，想請問這一題為什麼不能選A