Instructions: Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
Input: Problem: 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 ?
Options: a. 1: 2, b. 2: 1, c. 1: 3, d. 3: 1, e. 9: 4
Output:
e