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help with this pls

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

Anyone know? is appreciated! will mark brainliest if correct!