14) 14) Runaround Corporation sells running shoes and during January they ran production machines for 21,000 hours total and incurred $10,000 in maintenance costs. During July they ran production machines for 12,000 hours total and incurred $7800 in maintenance costs. Based on this data, what will total maintenance costs be if the machines are run for 16,500 hours? (Round intermediary calculations to the nearest cent.) A) $72,230 B) $4960 C) $18,990.4 D) Cannot determine from the information given