Soda Addiction<br>Judy loved every kind of soda. She didn't care what brand it was as long as it had caffeine. One day her doctor told her she needed to cut back on the drinks. It was very hard on Judy at first but she persevered. Eventually she gave up drinking soda completely.
Can we infer the following?
Judy didn't quit because the doctor told her to, she did it because she wanted to stop using caffeine. 
It's impossible to say