A vein possesses a large lumen because

Q. A vein possesses a large lumen because

A.            Tunica Media And Tunica Externa Form A Single Coat

B.            Tunica Interna And Tunica Media Form A Single Coat

C.            Tunica Interna, Tunica Nicuiu And Tunica Externa Are Thin

D.            Tunica Media Is A Thin Coat

Answer: Tunica Media Is A Thin Coat