MR Phillips wants to install hardwood flooring in his den.The flooring cost $25.86 per square yard. The blueprint below shows his house.What other information do you need in order to find the total cost of the flooring
A: the length and widths of the adjoining rooms in the blueprint
B: the total area of the blueprint
C: the scale of inches in the blueprint to yards in the house
D: the width of the den