A university cafeteria offers 6 flavors of pizza - pork,gobi-manjurian,pepperoni, chicken, Hawaiian and vegetarian. If a customer has an option (but not the obligation) to add extra cheese, mushrooms or both to any kind of pizza, how many different pizza varieties are available ? Choose the correct choice
A) 4
B) 8
C) 12
D) 36
E) 32
6 flavours * 6 choices = 6C1*6C1 = 6*6= 
<gadget id="calculator">6*6</gadget>
<output>36</output>
36=36
<result>D</result>
A university cafeteria offers 6 flavors of pizza - pork,gobi-manjurian,pepperoni, chicken, Hawaiian and vegetarian. If a customer has an option (but not the obligation) to add extra cheese, mushrooms or both to any kind of pizza, how many different pizza varieties are available ?