List All Subsets of the Following Set $$I = \{ 2,6 \}$$

Multiple Choice

List all subsets of the following set. $$I = \{ 2,6 \}$$

A) $\varnothing , \{ 2 \} , \{ 6 \} , \{ 2,6 \} , \{ l \} , I$
B) $\varnothing , \{ 2 \} , \{ 6 \} , \{ 2,6 \} , l$
C) $\varnothing , \{ 2 \} , \{ 6 \} , \{ 2,6 \}$
D) $\varnothing , \{ 2 \} , \{ 6 \}$
E) $\{ 2 \} , \{ 6 \} , \{ 2,6 \} , \{ I \} , I$