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: Biochemistry
Which of the following is false regarding Amestest 
Select and explain. 
A. Salmonella typhimurium is used, B. Mutated bacteria fail to grow in absence of histidine, C. It is used for testing mutagens, D. Developed by Bruce. N. Ames in 1970s
B: Mutated bacteria fail to grow in absence of histidine
Answer: B: Mutated bacteria fail to grow in absence of histidine 
Explanation: Mutated bacteria can grow even in the absence of Histidine.