Which of the Following Scenarios Shows Evidence of Inflation

Which of the following scenarios shows evidence of inflation?

A) You go to the soda machine and realize that a bottle of Fanta now costs 15 cents more.
B) You visit the local grocery store and see that your favorite chips are on sale for today only.
C) Your favorite bakery has changed ownership, and the cakes now seem to be lower in quality.
D) Your friend lends you $1,000 and asks for 2% interest.