What can the new HP zbook15 G2 Mobile workstation host?

A.
up to 4 processor cores and a choice of 6 professional graphics cards

B.
up to 4 processor cores and a choice of 2 professional graphics cards

C.
up to 6 processor cores and a choice of 2 professional graphics cards

D.
up to 4 processor cores and a choice of 4 professional graphics cards