Arteries tend to have thicker walls than veins. Which of the following is a reason for this?

• A. Arteries need to provide less resistance to blood flow than veins, and a thinner wall provides resistance.
• B. Veins need to provide more resistance to blood flow than arteries, and a thinner wall provides resistance.
• C. Arteries need to withstand higher blood pressure than veins.
• D. Veins need to withstand higher blood pressure than arteries.