Thermal Expansion: Consider a flat steel plate with a hole through its center as shown in the figure. When the temperature of the plate is increased, the hole will
A. expand only if it takes up more than half the plate's surface area.
B. contract if it takes up less than half the plate's surface area.
C. always contract as the plate expands into it.
D. always expand with the plate.
E. remain the same size as the plate expands around it.
Answer: D
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