This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Streptococci, Subject name: Microbiology
[{'content': 'Streptococcus causes: \nSelect and explain. \nA. Cellulitis, B. Gangrene, C. Pyoderma, D. UTI', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) CellulitisRef: Microbiology by Ananthanarayan and Paniker 8th ed. 1205# SKIN AND SOFT TISSUE INFECTION BY STREPTOCOCCUS-* Erysipelas-diffuse infection involving the superficial lymphatics* Impetigo-superficial infection of skin (pyoderma)* Cellulitis-cellulitis is caused mainly by hemolytic streptococci* Lymphangitis* Cellulitis is a bacterial infection involving the skin. It specifically affects the dermis and subcutaneous fat.* Gangrene-type of ischemic necrosis# Dry gangrene: Arterial obstruction# Wet gangrene: Venous obstruction* Pyoderma most commanly caused by staph aureus', 'role': 'assistant'}]