How many discussion posts do you need to complete for this course?单项选择题

A

At least 10 entries, with half as Original and the other half as Reply

B

At least 6 entries, with half as Original and the other half as Reply

C

At least 4 entries, with half as Original and the other half as Reply

D

At least 8 entries, with half as Original and the other half as Reply

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