Water temperature for handwashing should be at least 100˚F (38˚C) , option "A" Helps it removes oils from the hand that can hold bacteria
Lather your hands by patting them together with the soap. Lather the backs of your hands, between your fingers, and under your nails. Scrub your hands for minimum 20 seconds.
Thus, option "A" is correct, Water temperature for handwashing should be at least 100˚F (38˚C).
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