Answer: II and III only
Explanation:
100-12.5 is 87.5, meaning you would pay 87.5% of $70.
87.5% of 70 = 70(.875) (choice 2)
And since you get 12.5% off, you would subtract 12.5% of 70, or 70(.125), meaning the total price paid would be 70 - 70(.125) (choice 3)