Cardillo Inc., an escrow agent, has provided the following data concerning its office expenses:

Management believes that office expense is a mixed cost that depends on the number of escrows completed. Note: Real estate purchases usually involve the services of an escrow agent that holds funds and prepares documents to complete the transaction. Using the high-low method, the estimate of the variable component of office expense per escrow completed is closest to: $26.75 $118.23 $36.11 $72.49

January.. February March. April...... May June July... August September Escrows Completed 99 111 129 133 152 104 118 100 103 Office Expenses $13,181 $13,598 $14,239 $14,357 $15,095 $13,335 $13,847 $13,211 $13,283