Last Year a CD Had a Price of $12 and This

Last year a CD had a price of $12 and this year it is $15. Which of the following does NOT express this price change accurately?

A) Price rose by 25 percent.
B) Price rose by $3.
C) If this year is the base year, the index number for last year would be 80.
D) If last year is the base year, the index number for this year would be 80.