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: A, B and C started a business by investing Rs. 1,20,000, Rs. 1,35,000 and ,Rs.1,50,000 respectively. Find the share of each, out of an annual profit of Rs. 56,700.

 Option A: 16800;18900;21000

 Option B: 17800;19800;22500

 Option C: 15500;17600;20500

 Option D: 16400;17200;18900

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

[EX Q]: Question: For positive integers x and z, which of the following can be written as z^2?

 Option A: x^2+1

 Option B: x^2-1

 Option C: x^2-24

 Option D: x^2+11

 Option E: x^2-11
[EX A]: Option D

[EX Q]: Question: n a 1000m race, if A gives B a start of 40m, A wing by 19sec. But if A gives B start of 30sec, B wins by 40m.
Find the time taken by B to run 5000m race?

 Option A: 300

 Option B: 400

 Option C: 500

 Option D: 600

 Option E: 750
[EX A]:
Option E