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
The discovery of "gene transformation" came from the study of one of the following bacteria ? 
Select and explain. 
A. Bacillus subtilis, B. Streptococcus pyogenes, C. Streptococcus pneumoniae, D. Escherichia coli
C: Streptococcus pneumoniae
Answer: C: Streptococcus pneumoniae 
Explanation: Ans. is 'c' i.e., Streptococcus pneumoniae