单项选择题

At a sale, the cost of each tie was reduced by 20 percent and the cost of each belt was reduced by 30 percent.（）

A. if Quantity A is greater;
B. if Quantity B is greater;
C. if the two quantities are equal;
D. if you cannot determine the relationship based on the given information.

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单项选择题

If the vertices of a triangle have rectangular coordinates (0, 0), (8, 0), and (8, 6) respectively, then the perimeter of the triangle is

A. 10
B. 14
C. 24
D. 36
E. 48

单项选择题

（）

A. if Quantity A is greater;
B. if Quantity B is greater;
C. if the two quantities are equal;
D. if you cannot determine the relationship based on the given information.