(20) A rectangular piece of land to be developed as a memorial park has an area of 75 m. The length of the lot is three times the width of the lot. A rectangular path whose width is x meters is to be constructed along the inner perimeter of the lot. The land contained within the path will be landscaped. The cost to construct the path is $2 per square meter and the cost to landscape the inner field is $3 per square meter. Express the total cost to develop this lot as a function of x, the width of the path. (A) C(x) = 12x2 - 96x + 144, x > 0 (B) C(x) = 4x 32x + 144, x > 0 (C) C(x) = 12x2 - 120x + 225, x > 0 (D) C(x) = 4x2 - 40x + 225, x > 0 (E) none of the above Solution