Lucas and his sister Luisa are saving to buy a birthday present for their mother. The present costs $95. Lucas earns $16 per week running errands for neighbors and spends $7 of it. Luisa earns $24 per week babysitting and spends $12 of it. Which expression can be used to find how many weeks it will take to save for the present?
A 95 : [ (16 + 7) - (24 - 12) ]
B 95 : [ (16 + 7) - (24 + 12) ]
C 95 : [ (16 - 7) + (24 - 12) ]
D 95 : [ (16 - 7) + (24 + 12) ]
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