question_answer

If \[A=\left\{ a,\text{ }b,\text{ }e,\text{ }g,\text{ }k,\text{ }I,\text{ }m,\text{ }n \right\},\]\[B=\left\{ c,\text{ }d,\text{ }s,\text{ }t,\text{ v}, \right\}\] and \[\bigcup \] is the set of all the letters of English alphabet, the\[A'~\bigcup ((A~\bigcap B)~\bigcup B')\]is equal to ____

A)  \[A~\bigcup B\]

B)         \[A'~\bigcap B'\]

C)  \[\bigcup \]                  

D)         B

E)  None of these