What is the sum of all three digit integers formed using the digits 1, 2, and 3 (repetition is allowed)  Options
A) 4443  B) 5980  C) 5992  D) 5990  E) 5994
n = 3*3*3= 
<gadget id="calculator">3*3*3</gadget>
<output>27</output>
27   <x></x>= (333 + 111) / 2= 
<gadget id="calculator">(333 + 111) / 2</gadget>
<output>222</output>
222   Sum= number of integers x average value   n * <x> </x>= 27 * 222= 
<gadget id="calculator">27 * 222</gadget>
<output>5_994</output>
5994   answer= 5994
<result>E</result>
What is the sum of all three digit integers formed using the digits 1, 2, and 3 (repetition is allowed)