What is the prime factors’ number of 12?
Options
A) 2  B) 3  C) 4  D) 5  E) 6
prime factors’ number, as I assume, for a number X=a^n*b^m*c^o*d^p... is = n+m+o+p...   So, 24 = 2^2*3^1   prime factors’ number will be 2+1= 
<gadget id="calculator">2+1</gadget>
<output>3</output>
3.   Hence, answer is 3.
<result>B</result>
What is the prime factors’ number of 12?