At the high point of the relevant range, labour hours at Fredericton Restoration were 10,000 and wages were $22,500. At the low point of the relevant range, labour hours were 7,500 and wages were $17,500. Using the high-low method, determine the constant at Fredericton Restoration. A. $1,250 B. $13,750 C. $750 D. $2,500 E. $17,500