W：Yeah，it’s really awful.Look，you two start without me and I’ll try to get there as soon as possible，OK？
M：OK.Have you any idea what’s causing the hold up？It’s not usually this bad on Saturday afternoons.
Q：Which of these is the most likely situation？（）

A．The woman's car has broken down.
B．The woman is stuck in a traffic jam.
C．The woman's train has been cancelled.
D．The woman didn't know how long it would take her to get to the meeting place.