True about idiopathic sudden sensorineural loss -a) Vertigo always presentb) Carbogen ( 5% CO2 + 95 % O2) is beneficialc) Hearing loss occur within 24 hoursd) Hearing loss occur within 72 hourse) Audiometric threshold changes occur over at least 3 frequencies: (A) bce, (B) abd, (C) bcde, (D) acde
Answer is C. None