Which of the following statements regarding bond values during the COVID-19 pandemic are not true? Which of the following statements regarding bond values during the COVID-19 pandemic are not true?

B) Many investors sold their bonds to boost their liquidity.

A) The airline industry was especially hit hard with most major airlines downgraded to speculative or junk bonds.

D) All of these statements are true.

C) The Federal Reserve engaged in significant intervention which influenced the bond markets.