The nurse observes an unlicensed assistive personal (UAP) washing hands prior to entering the client's room. Which action by the UAP requires additional teaching?

A. Holding hands below elbows when rinsing is correct to prevent contamination. B. Washing for at least 20 seconds is appropriate. C. Turning off the faucet with bare hands can lead to recontamination. A paper towel should be used to turn off the faucet. D. Lathering using a circular movement is correct technique.