A 25-year-old African American female marathon runner presents to the clinic with nausea, vomiting, and abdominal pain. She reports a normal “healthy” diet with several daily vitamin supplements. Her...

A 25-year-old African American female marathon runner presents to the clinic with nausea, vomiting, and abdominal pain. She reports a normal “healthy” diet with several daily vitamin supplements. Her labs reveal elevated blood calcium, likely caused by ____________________ toxicity.

A. Vitamin A

B. Vitamin E

C. Vitamin C

D. Vitamin D