Multiple$-$Choice:$-$Conceptual

Assume that inflation is expected $40$ decline steadily in the future, but shat shereal$-$sisk$-$free$-$fate, $4^2,$ will remain constant. Which of the following statements is CORNECT, other things field constant?

$$ Hithe pure expectations theory holds, the Treasury yield$-$curve must be downward sioping. $5$

$$ If the pure expectations theory holds, the$-$corporate yield curve anust be$-$downward stoping. $9$

$$ If there$-$is a$-$positive maturity sisk premium, the Treasury yied curve$-$must be$-$apwardsloping. $1$

$$ If$-$inflation as expected $40$ decline, there can be$-$no$-$maturity sisk$-$premium. $1$