$\mathbf { Find~ A \cup R ~and A \cap R~ for~ the~ sets~ A~ and~ B}$

Multiple Choice

$\mathbf { Find~ A \cup R ~and A \cap R~ for~ the~ sets~ A~ and~ B}$
- $A = \{ - 3 , - 2 , - 1 \} , B = \{ 0,1,2 \}$

A) $\begin{array} { l } A \cup B = \{ \} \\A \cap B = \{ - 3 , - 2 , - 1,0,2 \}\end{array}$
B) $\begin{array} { l } A \cup B = \{ - 3 , - 2 , - 1,0,2 \} \\A \cap B = \{ \}\end{array}$
C) $\begin{array} { l } A \cup B = \{ \} \\A \cap B = \{ - 3 , - 2 , - 1,0,1,2 \}\end{array}$
D) $\begin{array} { l } A \cup B = \{ - 3 , - 2 , - 1,0,1,2 \} \\A \cap B = \{ \}\end{array}$