Definition: 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: the payment per hour for a daily - wages employee is increased by 33.33 and the working time is reduced by 33.33 %. what is the percentage change in the employee ' s income ?
Options: a. rs. 0.7889, b. rs. 0.8889, c. rs. 0.9889, d. rs. 1.8889, e. rs. 2.8889
Output:
b