Ann pays homeowner's insurance in advance for one year in the amount of $100. Ann sells her property to Bill and closes the sale on June 30th. Assuming that Ann paid the homeowner's insurance on January 1st of that year, how would the insurance be prorated between the buyer and seller?
A) Ann: $50, Bill: $50
B) Ann: $25, Bill: $75
C) Ann: $75, Bill: $25
D) Ann: $0, Bill: $100