This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
'C' in 'C Reactive Protein' stands for: 
Select and explain. 
A. Capsular Polysacharide in Pneumococcus, B. Concanavalin-a, C. Calretinin, D. Cellular
A: Capsular Polysacharide in Pneumococcus
Answer: A: Capsular Polysacharide in Pneumococcus 
Explanation: C-Reactive Protein is a member of the pentraxin family of proteins named for its ability to precipitate the C-substance polysaccharide in pneumococcus. CRP was so named because it was first discovered as a substance in the serum of patients with acute inflammation that reacted with the C- (capsular) polysaccharide of pneumococcus. CAP is another name for the CRP protein. CAP stands for catabolite activator protein; CRP stands for cyclic-AMP receptor protein. This can be the answer here, but it is not given in the options. So the only related option is Capsular Polysacharide in Pneumococcus. Therefore we can select it as answer of this question. Ref: Textbook of Microbiology By Ananthanarayan, 8th Edition, Page 221; Introduction to Genomics By Ahur Lesk, 2007, Page 396