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: How much more would Rs.20000 fetch, after two years, if it is put at 20% p.a. compound interest payable half yearly than if is put at 20% p.a. compound interest payable yearly?

 Option A: 482

 Option B: 297

 Option C: 278

 Option D: 298

 Option E: 279
[EX A]: Option A

[EX Q]: Question: Simplify: 250 x 250 - 100 x 100

 Option A: 761200

 Option B: 761400

 Option C: 52500

 Option D: 761500

 Option E: None of them
[EX A]: Option C

[EX Q]: Question: A miniature gumball machine contains 4 blue, 4 green, and 2 red gumballs, which are identical except for their colors. If the machine dispenses three gumballs at random, what is the probability that it dispenses one gumball of each color?

 Option A: 2/15

 Option B: 4/15

 Option C: 5/30

 Option D: 7/30

 Option E: 11/60
[EX A]:
Option B