In an Experiment That Tested the Effects of Negative Emotions

In an experiment that tested the effects of negative emotions on the immune system, experimenters gave each participant a blister using a vacuum pump. Which were the participants that took the longest to heal?

A) Participants who had financial problems.
B) Participants who had recently undergone a major life stressor.
C) Participants who ate an unhealthy diet.
D) Participants who had anger-control problems.