Penelope Has Been Taking Care of Her Ailing Father for the Last

Penelope has been taking care of her ailing father for the last two years.He has dementia and it is becoming more difficult for her to be able to manage on her own.How is this situation likely to affect her risk of developing a cold if she is exposed to a cold virus?

A) She is no more likely to develop a cold now than she was when she took over her father's care.
B) She is slightly more likely to develop a cold now than she was when she took over her father's care.
C) She is three times more likely to develop a cold now than she was when she took over her father's care.
D) It is impossible to say as a single stressor,even long lasting,is unlikely to affect one's likelihood of developing a cold.