What least number must be added to 686, so that the sum is completely divisible by 5 ?	Choose the most appropriate option.
A) 2 B) 3 C) 5 D) 4 E) 6
If we divide 686 by 5 remainder is 1   5 - 1= 
<gadget id="calculator">5 - 1</gadget>
<output>4</output>
4   Answer : 4
<result>D</result>
What least number must be added to 686, so that the sum is completely divisible by 5 ?