<prompt> A young 25 year old man following A presented with proptosis pulsatile in nature ,chemosis and pain in right eye after 4 days. On Examination there was bruit on forehead and right eye. The probable diagnosis isCavernous sinus thrombosisCarotico cavernous FistulaFracture sphenoidInternal Carotid Aery Aneurysm  <response>: B i.e. Carotico cavernos Fistula 