Pam Purchased a Quesadilla at Taco Bell for Lunch

Pam purchased a quesadilla at Taco Bell for lunch. She also asked for a water cup, which is free and to be used to get water at the soda fountain. Pam used the water cup to get Pepsi. Which of the following is correct?

A) Pam has simply taken advantage of a loophole with no supervision over water cup use
B) Pam has taken something that does not belong to her
C) Pam has done nothing wrong unless she was warned not to fill the water cup with soda
D) Both a and c