14. A rectangular floor is covered by a rug except for a strip p meters wide along each of the four edges. If the floor is m meters by n meters, what is the area of the rug, in square meters? (A) mn – p (m + n) (B) mn – 2p(m +n) (C) mn – p^2 (D) (m - p)(n - p) (E) (m –2p)(n – 2p)
Answer:E
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