input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** When broad-spectrum antibiotics are administered with coumarin anticoagulants, the anticoagulant action may be:   (A) Reduced because of enhanced hepatic drug metabolism   (B) Reduced because of increased protein-binding   (C) Increased because of reduction of vitamin 'K' sources   (D) Increased because of decreased renal excretion of the anticoagulant
output: ["(C) Increased because of reduction of vitamin 'K' sources <> answer", 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', "(A) Reduced because of enhanced hepatic drug metabolism  (B) Reduced because of increased protein-binding  (C) Increased because of reduction of vitamin 'K' sources  (D) Increased because of decreased renal excretion of the anticoagulant <> possible answers", '  When broad-spectrum antibiotics are administered with coumarin anticoagulants, the anticoagulant action may be: <> context']