Find the Indicated Intersection or Union $\{ 3,8,13,18 \} \cup \{ 8,18,20,28 \}$

Multiple Choice

Find the indicated intersection or union.
- $\{ 3,8,13,18 \} \cup \{ 8,18,20,28 \}$

A) $\{ 8,18 \}$
B) $\{ 3,8,13,18,20,28 \}$
C) $\{ 3,8,18,20 \}$
D) $\{ 8,18,20 \}$