A carpenter is building a rectangular room with a fixed perimeter of 520 ft. What are the dimensions of the largest room that can be built? What is its area? O A. dimensions: 130 ft by 130 ft; area: 16,900 ft- OB. dimensions: 260 ft by 260 ft: area: 67.600 ft2 O c. dimensions: 52 ft by 468ft; area: 24,336 #12 O D. dimensions: 130 ft by 390 ft; area: 50,700 ft