A student is comparing the structure of arteries and veins. He jotted down a few similarities and differences between both vessels. Which of the following comparisons is correct?
1) Arteries have thicker walls than veins.
2) Veins carry oxygenated blood while arteries carry deoxygenated blood.
3) Arteries have valves while veins do not.
4) Veins have a larger lumen than arteries.