Let A be the following set. A = $\lbrace \emptyset$, $1$, $\lbrace1,2 \rbrace \rbrace$. Mark each of the following true T or false F.

 1. $\lbrace \emptyset , 1 \rbrace \in P(A)$
 2. $\lbrace \lbrace 1,2 \rbrace \rbrace \subseteq A$
 3. $\lbrace \emptyset \rbrace \in P(A)$
 4. $\lbrace \lbrace 1 \rbrace \rbrace \subseteq P(A)$
 5. $\lbrace 1,2 \rbrace \subseteq A$