Detailed 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.
Problem:Problem: the length and breadth of a rectangle is increased by 10 % and 30 % respectively. what is the increase in the area ?
Options: a. 43.0, b. 44.0, c. 43.5, d. 45.0, e. 42.0
Solution:
a