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: On what dates of April, 2001 did Wednesday fall?

 Option A: 1st, 8th, 15th, 22nd, 29th

 Option B: 2nd, 9th, 16th, 23rd, 30th

 Option C: 3rd, 10th, 17th, 24th

 Option D: 4th, 11th, 18th, 25th

 Option E: None of these
[EX A]: Option D

[EX Q]: Question: A, B and C invested Rs.6300, Rs.4200 and Rs.10500 respectively, in a partnership business. Find the share of A in profit of Rs.12700 after a year?

 Option A: 3630

 Option B: 9232

 Option C: 8828

 Option D: 2387

 Option E: 3810
[EX A]: Option E

[EX Q]: Question: X starts a business with Rs.45000. Y joins in the business after 4 months with Rs.30000. What will be the ratio in which they should share the profit at the end of the year?

 Option A: 1:2

 Option B: 2:1

 Option C: 1:3

 Option D: 3:1

 Option E: 9:4
[EX A]:
Option E