Let $A = \{1, 2, \{3, 4\}, 5\}$. Which statement is **TRUE**?

The element $\{3, 4\}$ is itself one of the four members of $A$. So $\{3, 4\} \in A$ (membership), but $\{3, 4\} \not\subset A$ (because $3 \notin A$ — only the *pair* $\{3,4\}$ is an element). - **A** confuses $\in$ with $\subset$. - **C** uses $\subset$ where it should be $\in$. - **D** is false — $\phi$ is not listed as a member of $A$.