Let Find the Set $A \cup ( B \cup C )$

Multiple Choice

Let $$\begin{array} { l } A = \{ \text { June, Justine, Solly, Polly } \} \\B = \{ \text { Justine, Polly, Jelly } \} \\C = \{ \text { Ruth, Justine, Polly } \}\end{array}$$
Find the set $A \cup ( B \cup C )$ .

A) $\{ \text { June, Justine, Solly, Polly, Jelly, Ruth\} }$
B) $\text { \{June, Justine, Solly, Polly, Ruth\} }$
C) $\{ \text { Justine, Polly } \}$
D) $\text { \{Justine, Solly, Polly, Jelly, Ruth\} }$
E) $\varnothing$