Which of the following is an example of Jessie making a cognitive-behavioral change about her afternoon walks?
A. She records when and why she doesn't feel like going for a walk.
B. She has observed that she doesn't want to go walking when it's cloudy outside.
C. She reminds herself that taking a walk will make her feel better, even if she doesn't feel like walking now.
D. She believes that she hardly ever misses a walk, so it's not something worth monitoring.