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Which of the following sentences with a parenthetical expression is punctuated correctly?


Of course the girls couldn't wait, to jump in the pool on such a hot day.


Of course, the girls couldn't wait to jump in the pool on such a hot day.


Of course the girls, couldn't wait to jump in the pool, on such a hot day.


Of course the girls couldn't wait to jump in the pool, on such a hot day.