$10\mathrm{.}9$ Consider that the relation on a nonempty set A defined by a$$b is never true. $19010$ Relations $($a$)$ Describe $$ as a set. $($b$)$ Is $$ reflexive? $($c$)$ Is $$ symmetric? $($d$)$ Is $$ transitive? $($e$)$ Does $$ have trichotomy?