Subject: mathqa
Question: cindy has her eye on a sundress but thinks it is too expensive . it goes on sale for 15 % less than the original price . before cindy can buy the dress , however , the store raises the new price by 25 % . if the dress cost $ 51 after it went on sale for 15 % off , what is the difference between the original price and the final price ?
Option: 
A: $ 5.00
B: $ 6.80
C: $ 3.75
D: $ 0.00
Answer: C