On average, for the period $1926$ through $2017$:

Group of answer choices

small$-$company stocks have underperformed large$-$company stocks.

the excess return on large$-$company stocks has exceeded the excess return on small$-$company stocks.

the real rate of return on U$.$S$.$ Treasury bills has been negative.

the excess return on long$-$term corporate bonds has exceeded the excess return on long$-$term government bonds.

long$-$term government bonds have produced higher returns than long$-$term corporate bonds.