Periodontal Screening and Recorder system (PSR) is
recorded by using periodontal probe which has ____________: (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
Answer is B. None