Which of the following sentences is punctuated correctly?
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A
The project was delayed for several reasons: the lead designer was sick, the necessary materials did not arrive on time, and the client requested last-minute changes.
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B
The project was delayed for several reasons, the lead designer was sick, the necessary materials did not arrive on time, and the client requested last-minute changes.
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C
The project was delayed for several reasons; including the lead designer being sick, the materials not arriving, and client changes.
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D
The project was delayed for several reasons: including, the lead designer was sick, the materials did not arrive, and the client made changes.