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': 'Most common organism causing community acquired pneumonia - \nSelect and explain. \nA. Staphylococcus aureus, B. Streptococcus pyogenes, C. Streptococcus pneumoniae, D. Haemophilus influenzae', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Streptococcus pneumoniae o Streptococcus pneumoniae is the most common cause of community acquired acute pneumonia. It is the most common cause of lobar pneumonia.", 'role': 'assistant'}]