Which of the following is a true difference between a cochlear implant (CI) and a hearing aid? Group of answer choices hearing aid uses a battery but a CI has a solar rechargeable energy source output of CI is an electrical signal but output of hearing aid is an acoustical signal most insurance companies will pay for hearing aids but CIs are still in evaluation phase regarding insurance compensability where a hearing aid has a microphone, a CI has a receiver CI has digital processing (computer) as its amplifier; the majority of contemporary hearing aids have a voltage (analog) amplifier as the amplifier