The given table shows the cost f(t), in dollars, of item B after t years. Reminder: The function for item A was c(x) = 72(1.25)x. Which item recorded a greater percentage change in cost over the previous year?

A.
Product A; it changed by 125%

B.
Product A; it changed by 25%

C.
Product B; it changed by 130%

D.
Product B; it changed by 30%