input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** If a bacteria were susceptible to both penicillin and Erythromycin, then it would not be appropriate to treat the patients with both antibiotics at the same time because   (A) Penicillin is inactivated by erythromycin   (B) Erythromycin exerts its effects extracellularly   (C) Erythromycin enhances the β-lactamases activity   (D) Penicillin is only effective against growing cells
output: ['(D) Penicillin is only effective against growing cells <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Penicillin is inactivated by erythromycin  (B) Erythromycin exerts its effects extracellularly  (C) Erythromycin enhances the β-lactamases activity  (D) Penicillin is only effective against growing cells <> possible answers', '  If a bacteria were susceptible to both penicillin and Erythromycin, then it would not be appropriate to treat the patients with both antibiotics at the same time because <> context']