I checked the internet when I got home . Of course people who are deaf can drive . If hearing was so significant in driving those taking the test would have hearing checks and there would be a ban on playing music in the car . How do people who are deaf know there are emergency vehicles about ?

Question with options to choose from: What may have happened if he had not checked the internet ?
OPT: A. He may have gotten a hearing test .. B. There may have been a ban on playing music in the car .. C. He may have believed that deaf people could not drive .. D. He may not have known what to do for emergency vehicles ..
C.