The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 5-year-old child from a rural area presented to the OPD with pustular lesions on the lower legs. The cuture from the lesion showed hemolytic colonies on the blood agar which were Gram-positive cocci. Which of the following reactions would help to provisionally confirm the diagnosis of group A streptococcal pyoderma?   (A) Optochin sensitivity   (B) Bacitracin sensitivity   (C) Catalase positivity   (D) Bile solubility
['(B) Bacitracin sensitivity <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Optochin sensitivity \n (B) Bacitracin sensitivity \n (C) Catalase positivity \n (D) Bile solubility <> possible answers', '  A 5-year-old child from a rural area presented to the OPD with pustular lesions on the lower legs. The cuture from the lesion showed hemolytic colonies on the blood agar which were Gram-positive cocci. Which of the following reactions would help to provisionally confirm the diagnosis of group A streptococcal pyoderma? <> context@']