What is the yield curve? (Think of the U.S. treasury yield curve.) What does it look like now? Why is it considered a precursor to a recession? What does Campbell Harvey, the economist most associated

a. The yield curve shows the relationship between inflation and interest rates.
b. The yield curve is an indicator of stock market performance.
c. The yield curve is a graphical representation of the relationship between bond yields and maturities.
d. The yield curve is irrelevant to economic analysis.