What least number must be added to 1170, so that the sum is completely divisible by 23 ?  Choose the correct answer.
A) 3
B) 5
C) 7
D) 9
E) 11
51*23= 
<gadget id="calculator">51*23</gadget>
<output>1_173</output>
1173   1173 - 1170= 
<gadget id="calculator">1173 - 1170</gadget>
<output>3</output>
3   3nswer : 3
<result>A</result>
What least number must be added to 1170, so that the sum is completely divisible by 23 ?