A Patient Takes Oral Theophylline Twice Daily for Chronic Stable $\beta$

A patient takes oral theophylline twice daily for chronic stable asthma. After developing an infection, the patient went to an after-hours clinic where ciprofloxacin was prescribed. What action will the patient's primary provider take when the patient follows up the next day?

A) Prescribe a different antibiotic.
B) Reduce the theophylline dose.
C) Increase the theophylline dose.
D) Discontinue the theophylline and prescribe a long-acting $\beta$ agonist.