The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Chlorhexidine mouth rinsing:   (A) Specifically inhibits gram-negative bacteria   (B) Can inhibit subgingival plaque   (C) May disturb taste sensation   (D) Can only be obtained on prescription
['(C) May disturb taste sensation <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Specifically inhibits gram-negative bacteria \n (B) Can inhibit subgingival plaque \n (C) May disturb taste sensation \n (D) Can only be obtained on prescription <> possible answers', '  Chlorhexidine mouth rinsing: <> context@']