Detailed Instructions: In this task, you need to answer the given multiple-choice question on geometry. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Q: 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