Is this the dining room? （）

Is this the dining room? （）
A、Yes, please come in.
B、Sorry, it isn't the waiting room.
C、The room is full of people.
D、I'd like to have breakfast.
【正确答案】：A
【题目解析】：A：Yes, please come in. 是的，请进。这个选项明确回应了问题的询问，并表示对方询问的地方确实是餐厅，且邀请对方进入。