What least number should be added to 1021, so that the sum is completely divisible by 25?  Choose the correct choice from the following
A) 4  B) 3  C) 2  D) 0  E) 5

Rationale: "1021 ã · 25 = 40 with remainder = 21 21 + 4 = 25 . hence 4 should be added to 1021 so that the sum will be divisible by 25 answer : option a"
Answer: A