Scientists at a Major University Have Isolated a Chemical from Grapes

Multiple Choice

Scientists at a major university have isolated a chemical from grapes. Which of the following features is an indication that this chemical could be a vitamin?

A) The chemical has a very limited range of safe intake.
B) When large amounts of the chemical are consumed, no health problems occur.
C) When a person's diet lacks the chemical, his or her body experiences abnormal functioning.
D) The chemical is in grapes, cherries, and tomatoes.