Your Friend Sheena Is Visiting Your Home When She Complains

 Your friend Sheena is visiting your home when she complains of a headache. You gave her a bottle that you thought had pain reliever, but it was your multivitamin container. She took one and an hour later thanked you that it worked and she is much better. Sheena

A) is mistaken about the labeling of the bottle.
B) is experiencing a placebo effect.
C) likely never had a headache.
D) still has a headache and misinformed you.