Mia and Bailey Are Both Exposed to a Virus That

Mia and Bailey are both exposed to a virus that causes the common cold when they are studying for finals with their friend Katie. Bailey has been experiencing more negative stress events in her life than Mia. Based on research completed by Cohen, Tyrrell, & Smith (1991, 1993) , Cohen et al. (2008) and Marsland, Bachen, & Cohen (2012) , what is the likelihood that Mia and Bailey will get a cold?

A) Bailey is more likely to get a cold because her immune system is weakened due to stress.
B) Bailey and Mia have an equal likelihood of getting a cold because the immune system is not affected by stress.
C) Mia is more likely to get a cold because Bailey's immune system has been strengthened in response to the higher levels of stress to which she has been exposed.
D) Neither Bailey nor Mia are likely to get the cold because both them have strengthened immune systems since they are both experiencing the stress associated with studying for final exams.