Let $A= \{ 1, 5, 7, 10, 11 \}$ ,   $B= \{ 1, 3, 7, 10 \}$ ,   $C= \{ 2, 3, 4, 7, 8, 11 \}$.
List the elements of the following sets. If there is more than one element write them separated by commas.
$A \cap B = \{$ $\}$
$A \cup B = \{$ $\}$
$(B \cup C) \cap A = \{$ $\}$