What is true about an inverted yield curve?

A$.$ An inverted yield curve means results when investor demand for longer maturities exceeds the demand for shorter maturities.

B$.$ An inverted yield curve means rewards long$-$term investors for the additional risk they are assuming.

C$.$ An inverted yield curve means sometimes results from actions by the Bank of Canada to control inflation.

D$.$ An inverted yield curve means that long$-$term bonds are yielding more than short$-$term bonds.