Grady has an inflamed knee from doing a lot of physical exercise the day before. He stops by the pharmacy to find a drug to relieve the inflammation and asks the pharmacist to recommend a drug. The pharmacist asks Grady if he has a history of peptic ulcers. Which BEST describes why the pharmacist needs to know this?

a. A peptic ulcer could result in a drug-disease interaction by taking beta blockers, a common anti-inflammatory medication.
b. A peptic ulcer could result in a drug-drug interaction by taking aspirin, a common anti-inflammatory medication.
c. A peptic ulcer could result in a drug-disease interaction by taking aspirin, a common anti-inflammatory medication.
d. A peptic ulcer could result in a drug-drug interaction by taking beta blockers, a common anti-inflammatory medication.