Darla wants to buy 3 identical gift cards. She wants to make sure her total
cost is no more than $3 above or below $75. Which of the following
inequalities represents this situation?
A. 13c-75 ≤3
B. 175+3c| ≤ 3
C. 13c-21 ≤60
D. 13c+21 ≤60