f n = 3^3 - 2^3, which of the following is NOT a factor of n?  Pick one
A) 18
B) 19
C) 38
D) 57
E) 76
27-8= 
<gadget id="calculator">27-8</gadget>
<output>19</output>
19 . nineteen is prime umber and factor. any number not a multiplication of 19 is not a factor.   18
<result>A</result>
f n = 3^3 - 2^3, which of the following is NOT a factor of n?