30 POINTS, WILL GIVE BRAINLIEST, PLS HURRY!!

Is the following scenario: "Sabela usually loves peaches, but last week she got really sick and vomited right after eating one. Even though she later found out she had the flu, now just the sight or smell of a peach makes her nauseous." a:

a. unconditioned stimulus
b. unconditioned response
c. neutral stimulus/conditioned stimulus
d. conditioned response