au-amc MCQ (SBA): Community-acquired pneumonia in children

An 8-year-old Aboriginal girl from a remote community presents with fever, cough and difficulty breathing. Chest X-ray shows right lower lobe consolidation. She is otherwise healthy and can take oral medicines. Local prevalence of penicillin-resistant pneumococcus is low. According to Therapeutic Guidelines and primary care antibiotic summary tables, what is the most appropriate first-line oral antibiotic?