Answer:
d
Step-by-step explanation:
Option d is correct, i.e. Treasury Inflation-Protected Securities (TIPS) provide a constant stream of income in real (inflation-adjusted) dollars and have their principal adjusted in proportion to the Consumer Price Index.
This is true because TIPS adjust's the principle of the bond with inflation and even though the interest rate is fixed , the interest is calculated on the adjusted principle thereby increasing the interest payment during inflation