Which of these sentences has the correct comma placement?
A. I went to the store to buy crayons, markers, pencils, and other school supplies.
B. I went to the store to buy crayons markers pencils, and other school supplies.
C. I went to the store to buy crayons, markers, pencils and other school supplies.
D. I went to the store to buy crayons; markers; pencils; and other school supplies.

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