After receiving instructions to measure the weight of Mrs. Johnson, a small, thin patient, the digital scale indicated she weighed 400 lbs. After checking the zeroing and re-weighing Mrs. Johnson, the scale reads her weight as 450 lbs. The NA should:
A. record the weight as indicated by the digital scale reading. B. tag the scale with \do not use\ and report the scale to maintenance for service. C. try to re-calibrate the scale and weigh Mrs. Johnson again D. Add the two weights and report the average weight.