Q: 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: what will be the cost of gardening 1 meter boundary around a rectangular plot having perimeter of 340 meters at the rate of rs. 10 per square meter ?
Options: ['a. rs. 3430', 'b. rs. 3440', 'c. rs. 3450', 'd. rs. 3460', 'e. rs. 3490']
A:
b