A power station is located on the boundary of a square region tha

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A power station is located on the boundary of a square region that measures 10 miles on each side. Three substations are located inside the square region.

Quantity A

The surn of the distances from the power station to each of the substations

Quantity B

30 miles

A、The quantity in Column A is greater
B、The quantity in Column B is greater
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.

答案：D

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