What is the sum of the prime factors of 81 and the prime factors of 144?
Choose the most appropriate option:	A) 33	B) 45	C) 30	D) 33	E) 36
The prime factors of 81 are 3*3*3*3   The prime factors of 144are 12*12   3+3+3+3+12+12= 
<gadget id="calculator">3+3+3+3+12+12</gadget>
<output>36</output>
36 36 is the correct answer
<result>E</result>
What is the sum of the prime factors of 81 and the prime factors of 144?