0,2,6,12,20, ____ Choose the correct choice:  A) 25  B) 28  C) 30  D) 26  E) 35
0,2,6,12,20, .....   1*1-1= 
<gadget id="calculator">1*1-1</gadget>
<output>0</output>
0   2*2-2= 
<gadget id="calculator">2*2-2</gadget>
<output>2</output>
2   3*3-3= 
<gadget id="calculator">3*3-3</gadget>
<output>6</output>
6   4*4-4= 
<gadget id="calculator">4*4-4</gadget>
<output>12</output>
12   5*5-5= 
<gadget id="calculator">5*5-5</gadget>
<output>20</output>
20   So 6*6-6= 
<gadget id="calculator">6*6-6</gadget>
<output>30</output>
30   ANSWER:30
<result>C</result>
0,2,6,12,20, ____