The circulatory system keeps the body and its tissues continuously oxygenated. It does this by having
A) veins to carry both oxygenated blood to the tissues and deoxygenated blood to the lungs.
B) arteries to carry both oxygenated blood to the tissues and deoxygenated blood to the lungs.
C) arteries to carry oxygenated blood to the tissues and veins to carry deoxygenated blood from the tissues to the lungs.
D) veins to carry oxygenated blood to the tissues and arteries to carry deoxygenated blood from the tissues to the lungs.
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