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: Dental
Periodontal Screening and Recorder system (PSR) is
recorded by using periodontal probe which has ____________ 
Select and explain. 
A. Graduation - 1, 2, 3, 4, 5, 6 7, B. 0.5mm ball tip with color coded 3.5 to 5.5mm, C. Color coded for every 3mm, D. Graduated - 1, 5, 10 & 15mm
B: 0.5mm ball tip with color coded 3.5 to 5.5mm
Answer: B: 0.5mm ball tip with color coded 3.5 to 5.5mm 
Explanation: None