A Patient with a Lung Disease Takes Prophylactic Antibiotics and Tries

A patient with a lung disease takes prophylactic antibiotics and tries to stay indoors during the winter. Today the patient reports bleeding more than normal after a minor injury. How would the nurse evaluate this report?

A) The antibiotic may be interfering with clotting times.
B) The patient is not getting enough vitamin D from sunlight.
C) The patient may be ingesting more vitamin K-containing food.
D) The patient's lung disease has affected the production of platelets.