With Respect to the Period of the Last Several Decades

With respect to the period of the last several decades, which of the following statements is true?

A) Bank net worth has been relatively stable, but the riskiness of bank assets has increased substantially.
B) Bank net worth has declined substantially, but the riskiness of bank assets has remained about the same.
C) Bank net worth has declined substantially and the riskiness of bank assets has increased substantially.
D) Bank net worth and the riskiness of bank assets have remained relatively stable.