Karen Allen Had Female Students Attempt to Solve Relatively Difficult

Karen Allen had female students attempt to solve relatively difficult math problems.One third of the participants were allowed to have their dog with them while they worked on the problems, one third had a close friend with them, and the remainder worked on the problems while they were alone.The results of the study indicated that:

A) having either a dog or a close friend present reduced stress-related arousal
B) having a dog present was associated with the lowest arousal effects
C) having either a dog or a close friend present increased stress-related arousal
D) having a dog present was associated with the highest arousal effects