[ Vocabulary and Grammar ]
. Which sentence uses commas correctly?
A. Since I was absent on Tuesday, I have a lot of make-up work to do.
B. Since, I was absent on Tuesday I have a lot of make-up work to do.
C. Since I was absent, on Tuesday, I have a lot of make-up work to do.
D. Since I was absent on Tuesday, I have a lot, of make-up work to do.

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