Which of the following are draining channels of cavernous sinus -a) Inferior petrosal sinusb) Inferior ophthalmic veinc) Sphenoprietal sinusd) Middle cerebral veine) Superior ophthalmic vein

Draining channels (communications) of cavernous sinus Into transverse sinus through superior petrosal sinus Into internal jugular vein through inferior petrosal sinus and through a plexus around the ICA Into pterygoid plexus of veins through emissary veins Into facial vein through superior ophthalmic vein Right and left cavernous sinus communicates with each other by anterior and posterior intercavernous sinuses and through basilar plexus of veins