What is the sum of the different positive prime factors of 1080?
Choose the correct choice from the following answers:
A) 6
B) 4
C) 8
D) 9
E) 10
I think answer is 10: 10   1080 = 2*2*2*3*3*3*5   Sum of theDIFF10R10NTpositive prime factors = 2 + 3 + 5= 
<gadget id="calculator">2 + 3 + 5</gadget>
<output>10</output>
10
<result>E</result>
What is the sum of the different positive prime factors of 1080?