There are already 1,200 gallons of water in a swimming pool. If water is filling the pool at a rate of 35 gallons per minute, which expression indicates the amount of water, in gallons, in the swimming pool after m minutes?
A.
1,200 ÷ 35 × m
B.
(1,200 + 35) ÷ m
C.
1,200 + 35 × m
D.
1,200 - 35 × m
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