Which of the following is a true statement?

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(A) Let the set be $A = \{a, b, c\}$.$1$. For option $A$: The set $\{a\}$ contains the element $a$,which is also an element of $A$. Therefore,$\{a\} \

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$\{a\} \subseteq \{a, b, c\}$

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(A) Let the set be $A = \{a, b, c\}$.$1$. For option $A$: The set $\{a\}$ contains the element $a$,which is also an element of $A$. Therefore,$\{a\} \subseteq A$ is a true statement.$2$. For option $B$: The element $a$ belongs to $A$ $(a \in A)$,but the set $\{a\}$ is a subset,not an element of $A$. Thus,$\{a\} \in A$ is false.$3$. For option $C$: The empty set $\phi$ is a subset of every set,but it is not necessarily an element of $A$ unless explicitly stated. Thus,$\phi \in A$ is false.Therefore,the correct statement is $\{a\} \subseteq \{a, b, c\}$.

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