A Florida seller sold his property for $55,000, with the closing date set for may 18. the property is assessed for$50,400, with country taxes at rate of 18 mills and city taxes at 12 mills. Based upon 12 equal months of 30 days each, and the day of closing belonging to the seller, how much of the combined taxes will be credited to the buyer?

A. 554.40

B. 579.60

C.453.60

D. 705.60