Notice: the situation below takes place in an English-speaking country. You've been invited to dinner at a friend's home. You are about to sit down to eat, but you want to use the toilet first. What would you do?
选项：

A:Say "Excuse me, where is the toilet?";
B:Say "Could I wash my hands before dinner?";
C:Say "Do you mind if I use the bathroom?";
D:say nothing and start looking around the house for the toilet.