What least number must be subtracted from 13601, so that the remainder is divisible by 87 ?

Question:
What least number must be subtracted from 13601, so that the remainder is divisible by 87 ?

[A].

23

[B].

31

[C].

29

[D].

37

Answer: Option C

Explanation:

87) 13601 (156
87
—-
490
435
—-
551
522
—
29
—

Therefore, the required number = 29.