The lab is considering a new method for BUN. A within run precision study was performed by running the abnormal control 10 times. The mean obtained was 50 mg/dL and the SD was 4.6. The manufacturer claims the C.V. for this method is 5.0%. What is the calculated CV and is this precision acceptable? A. calculated C.V. at 4.6% is less than the manufacturer's claim, precision is acceptable B. calculated C.V. at 9.2% is greater than the manufacturer's claim, precision is unacceptable C. calculated C.V. at 9.2% is less than two times the manufacturer's claim, precision is acceptable D. calculated C.V. at 10.8% is greater than the manufacturer's claim, precision is unacceptable