The client is scheduled to have a xenograft to a left lower-leg burn. The client asks the nurse, "What is a xenograft?" Which statement by the nurse would be the best response?

1. "The doctor will graft skin from your back to your leg."
2. "The skin from a donor will be used to cover your burn."
3. "The graft will come from an animal, probably a pig."
4. "I think you should ask your doctor about the graft."