The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Subantimicrobial dose of doxycycline is   (A) 20 mg doxycycline   (B) 60 mg doxycycline   (C) 80 mg doxycycline   (D) 150 mg doxycycline
['(A) 20 mg doxycycline <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 20 mg doxycycline \n (B) 60 mg doxycycline \n (C) 80 mg doxycycline \n (D) 150 mg doxycycline <> possible answers', '  Subantimicrobial dose of doxycycline is <> context@']