A nurse is admitting a client who is having an exacerbation of his asthma. When reviewing the provider's orders, the nurse recognizes that clarification is needed for which of the following medications?

Rationale: A. Prednisone is a corticosteroid commonly used during asthma exacerbations to reduce airway inflammation. B. Propranolol is a non-selective beta-blocker that can worsen asthma by causing bronchoconstriction. Prescribing this medication to a patient with asthma requires clarification. C. Montelukast is a leukotriene receptor antagonist used for long-term asthma control and is appropriate. D. Theophylline is a bronchodilator used in asthma management, particularly for chronic or severe cases, and is appropriate when prescribed carefully.