question_answer

If \[P=\left\{ a,\text{ }b,\text{ }c,\text{ }d \right\}\]and \[Q=\left\{ a,\text{ }c,\text{ }e \right\}\]then \[P\Delta Q=?\]

A)  \[\left\{ a,\text{ }b,\text{ }c,\text{ }d,\text{ }e \right\}\]

B)         \[\left\{ b,\text{ }d,\text{ }e \right\}\]

C)  \[\left\{ b,\text{ }d \right\}\]

D)        \[\left\{ a,\text{ }c \right\}\]

E)  None of these