Rewrite the Statement Using Mathematical Symbols $a$ Is an Element Of $\{ k , a , d , z , t \}$

Multiple Choice

Rewrite the statement using mathematical symbols.
- $a$ is an element of $\{ k , a , d , z , t \}$ .

A) $a \in \{ k , a , d , z , t \}$
B) $\{ a \} \subseteq \{ k , a , d , z , t \}$
C) a $\subset \{ k , a , d , z , t \}$
D) $\{ a \} \in \{ k , a , d , z , t \}$