A nurse is teaching a prenatal class about infection prevention at a community center. Which of the following statements by a client indicates an understanding of the teaching?

"I can clean my cat's litter box during my pregnancy."

"I should wash my hands for 10 seconds with hot water after working in the garden."

"I can visit my nephew who has chickenpox 6 days after the sores have crusted."

"I should take antibiotics when I have a virus."