Which of these is true?

A
Both veins and arteries carry oxygen-rich blood.

B
Both veins and arteries carry oxygen-poor blood.

C
Veins carry oxygen-poor blood, and arteries carry oxygen-rich blood.

D
Veins carry oxygen-rich blood, and arteries carry oxygen-poor blood.

1 answer

C
Veins carry oxygen-poor blood, and arteries carry oxygen-rich blood.
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