Deep venous system of brain consists of -a) Internal cerebral veinb) Great cerebral veinc) Basal veinsd) Cavernous sinus: (A) abc, (B) bc, (C) acd, (D) bcd
Answer is A. Deep veins of the cerebral hemispheres

Internal cerebral veins (two)
Basal veins (two)
Great cerebral vein of GalenQ