单项选择题

A.PL/-2.00X180=-2.00/+2.00X90
B.+2.00/-0.50X60=+2.50/+0.50X150
C.-1.25/+0.75X4=-0.50/-0.75X86
D.+7.00/-2.00X78=+5.00/+2.00X12
E.+0.25/-3.00X50=-3.25/+3.00X140