The Nurse Is Talking with a Member of the Family

The nurse is talking with a member of the family of a patient who had surgery for a cochlear implant. Which statement by the family member is correct?

A) "A cochlear implant won't replace normal hearing; it will improve sound perception."
B) "It will be much nicer than a hearing aid, as nothing needs to be worn or will be visible."
C) "The speaking voice will improve, too."
D) "It will be less expensive than a hearing aid since you don't have much equipment."