A university cafeteria offers 22 flavors of pizza - 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 ? Select the correct option:  A) 41  B) 8  C) 12  D) 4  E) 32
2 flavours * 2 choices = 2C1*2C1 = 2*2= 
<gadget id="calculator">2*2</gadget>
<output>4</output>
4=4
<result>D</result>
A university cafeteria offers 22 flavors of pizza - 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 ?