When we are trying to change our diet, we usually will be anxious because we are nervous about ______.

A．The woman will drink only a bit of coffee.
B．The woman is thirsty.
C．The woman is starving for only having a bit of coffee today.
D．The woman needs coffee to keep herself awake.

A．From the paper.
B．From the signpost.
C．From her friends.
D．From television.