A university cafeteria offers 5 flavors of pizza - pork,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 ?	Select: A) 4 B) 8 C) 12 D) 25 E) 32
5 flavours * 5 choices = 5C1*5C1 = 5*5= 
<gadget id="calculator">5*5</gadget>
<output>25</output>
25=25
<result>D</result>
A university cafeteria offers 5 flavors of pizza - pork,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 ?