Which property $of$ integrals allows you $to$ make your conclusion?

${\displaystyle \underset{a}{\overset{b}{}}}f(x)dx=-{\displaystyle \underset{b}{\overset{a}{}}}f(x)dx$

${\displaystyle \underset{a}{\overset{c}{}}}f(x)dx+{\displaystyle \underset{c}{\overset{b}{}}}f(x)dx={\displaystyle \underset{a}{\overset{b}{}}}f(x)dx$

$Iff(x)0$ for $axb,$ then ${\displaystyle \underset{a}{\overset{b}{}}}f(x)dx0.$

${\displaystyle \underset{a}{\overset{a}{}}}f(x)dx=0$

$Ifmf(x)M$ for $axb,$ then

$a$