A shopkeeper sells 1 kg rice to two customers Seema and Reena. For Seema he charges exactly the cost price but under weighs the quantity by 12%. For Reena he sells at 25% more than cost price but over weighs the quantity by 12%. What is his overall profit/loss percentage?
A12.5% loss
B12.5% profit
C9.1% loss
D9.1% profit