Which of the following would be the MOST appropriate over-the-counter analgesic for a patient with type I von Willebrand's disease?
(A) Aspirin $80 \mathrm{mg}$.
(B) Aspirin $325 \mathrm{mg}$.
(C) Ibuprofen $200 \mathrm{mg}$.
(D) Acetaminophen $325 \mathrm{mg}$.