After Teaching the Parents of a Child with a Hydrocele

After teaching the parents of a child with a hydrocele about this condition, which statement indicates that the teaching was successful?

A) "If this gets worse and we don't treat it, our son could become infertile."
B) "This condition should gradually go away on its own."
C) "The surgeon is going to operate on him immediately."
D) "It's going to be difficult putting ice packs on his scrotum."