What is the sum of the different positive prime factors of 540? Choose the correct choice
A) 10	B) 11	C) 15	D) 16	E) 18
540   54*10 --&gt; 3*3*3*2*2*5 --&gt; 3+5+2=10. Remember its asking for the DIFFERENT positive prime factors of 540.   10
<result>A</result>
What is the sum of the different positive prime factors of 540?