To meet the Federal hearing standard, the driver must successfully complete one
hearing test with one ear, either the forced whisper test of the audiometric test.
Which is true of the audiometric test:
a. Results are recorded according to the American National Standards Institute
(ANSI).
b. Although frequently recorded, the results for the 4,000 Hz test are not
included in calculating the results for the hearing standard.
c. The driver will usually have to go to an audiologist or hearing aid center for
testing with a hearing aid, but this is not mandatory.
d. All of the above are correct.