The average of first 12 even numbers is?  Select the correct option:
A) 10  B) 11  C) 12  D) 13  E) 14
Sum of 12 even numbers = 12 * 13= 
<gadget id="calculator">12 * 13</gadget>
<output>156</output>
156   Average= 156/13 = 13   ANSWER:13
<result>D</result>
The average of first 12 even numbers is?