Cho\(A = \left\{ {1,2,3,4,5,6} \right\},B = \left\...

Câu hỏi: Cho$A = \left\{ {1,2,3,4,5,6} \right\},B = \left\{ { - 2,0,3,5,9} \right\}$. Khi đó $A \cup B =$  

A

$\left\{ { - 2,0,1,2,3,4,5,6,9} \right\}$                          

B

$\left\{ { - 2,0,9} \right\}$

C

$\left\{ {3,5} \right\}$                                                  

D  $\left\{ {1,2,4,6} \right\}$