The New Jewelry Store Sells Mostly Costume Jewelry,but It Also

The New Jewelry Store sells mostly costume jewelry,but it also sells an expensive watch brand.The owner of the store is concerned about monitoring sales and inventory of the watches.He decided to perform a quick inventory count of the watches on a daily basis as a control procedure.The owner counts 59 watches at the end of business on Thursday.On Friday,a shipment of 27 watches is received.The point-of-sale terminal for Friday indicates that 7 watches were sold that day.A quick inventory of watches at the end of business on Friday indicates that 71 watches are on hand.How many,if any,watches are probably stolen?

A) 0
B) 7
C) 8
D) 12