The given graph shows measurements of different types of blood vessels (X, Y and Z). Select the incorrect option regarding these.
ABlood vessels of type Y have valves.
BBlood vessels of type X carry blood away from the heart.
CBlood vessels of type Z connect an X to a Y.
DBlood vessels of type X are superficially placed and blood vessels of type Y are deep seated in the body.
there is no incorrect option in the given question