Choose the correct description of a typical medium-sized vein.

A)In these vessels,the thin tunica media is surrounded by a thick tunica externa composed of mostly collagen fibers.
B)Ranging from 2 mm to 9 mm in diameter,its thin tunica media consists of one to two layers of smooth muscle cells.
C)It has a diameter of approximately 0.4 cm and has more smooth muscle cells and fewer elastic fibers.
D)It ranges from 2 mm to 9 mm in diameter,and the relatively thick tunica externa has longitudinal bundles of elastic and collagen fibers.
E)It has a diameter up to 2.5 cm,and its tunica media is dominated by elastic fibers rather than smooth muscle cells.