The following are multiple choice questions (with answers) about medical knowledge.   **Question:** On the day following a formocresol pulpotomy of a mandibular molar, a three year old patient returned with a large ulcer near the midline of the lower lip. What is the probable cause of the ulcer?   (A) Lip biting by the patient   (B) Allergy to the anaesthetic solution   (C) Pressure by the rubber dam frame   (D) Leakage of formocresol on the lip
['(A) Lip biting by the patient <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Lip biting by the patient \n (B) Allergy to the anaesthetic solution \n (C) Pressure by the rubber dam frame \n (D) Leakage of formocresol on the lip <> possible answers', '  On the day following a formocresol pulpotomy of a\nmandibular molar, a three year old patient returned with\na large ulcer near the midline of the lower lip. What is\nthe probable cause of the ulcer? <> context@']