【单选题】Sometimes it's just hard to choose. You're in a restaurant, and the waiter has his pen at the ready. As you hesitate, he gradually begins to take a close interest in the ceiling, his fingernails, then...
A.
it is common for his customer to hesitate in ordering a meal
B.
it is impolite for his customer to order with hesitation
C.
it is difficult for his customer to expect quality food