Harold, a 42-year-old African American, has moderate persistent asthma. Which of the following asthma medications should if it at all? A.Betamethasone, an inhaled corticosteroid be used cautiously, B.Salmeterol, an inhaled long-acting beta-agonist, C.Albuterol, a short-acting beta-agonist, D.Montelukast, a leukotriene modifier