why is the answer decrease to 0.5%?

7i. The yield of a 10-year TIPS T-note is 1% annually while the yield of a 10 -year regular Tnote is 5% annually. If the actual inflation rate is 3%, what will happen to the yield of the 10 -year TIPS T-note's yield? A. increase to 2% B. stay at 1% C. decrease to 0.5% D. increase to 3%