Chandni's State Is Gripped by a Flu Epidemic

Chandni's state is gripped by a flu epidemic. Chandni is alert to the slightest hint of a scratchy throat, and the faintest suggestion of aching joints. After all, her friend Pippa tested positive for the flu, and is staying home from school and work, drinking hot tea and sleeping most of the day. Which statement is true?

A) Both Chandni and Pippa display illness behavior.
B) Both Chandni and Pippa display sick-role behavior.
C) Chandni exhibits illness behavior, whereas Pippa displays sick-role behavior.
D) Chandni exhibits sick-role behavior, whereas Pippa displays illness behavior.