单项选择题

Last Week This Week Next Week
Pencils 10 cents 5 cents 15cents
Ball Pens 79 cents 50 cents 1.19 dollars
Exercise Books 89 cents 60 cents 1.25 dollars
Letter Paper (100 sheets) 2.99 dollars 2.00 dollars 2.99 dollars
All Textbooks 30% off
T-shirts 4.99 dollars 3.5 dollars 6.00 dollars
Jackets 22.50 dollars 18.00 dollars 25.00 dollars

If a textbook was 15:00 dollars last week, how much is it today

A.10. 50 dollars.
B.4. 50 dollars.
C.10. 00 dollars.