You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

[EX Q]: Question: Find compound interest on Rs. 5000 at 12% per annum for 1 year, compounded half-yearly.

 Option A: Rs. 600

 Option B: Rs. 618

 Option C: Rs. 525

 Option D: Rs. 620

 Option E: None
[EX A]: Option B

[EX Q]: Question: Twelve participants are participating in a competition. In how many ways can the first three prizes be won?

 Option A: 1320

 Option B: 680

 Option C: 820

 Option D: 720

 Option E: 620
[EX A]: Option A

[EX Q]: Question: The number N is 5,2H7, where H represents the ten's digit. If N is divisible by 3, what is the value of H?

 Option A: 3

 Option B: 8

 Option C: 5

 Option D: 6

 Option E: 4
[EX A]:
Option E