<human>: Goal: how to calculate miles to kilometers

Which of the following methods is more reasonable for accomplishing this goal?

OPTIONS:
- Converting a mile length measurement to a kilometer measurement involves multiplying the length by the conversion ratio to find the result. One mile is equal to 1.609344 kilometers, so to convert simply multiply by 1.609344.
- Converting a mile length measurement to a kilometer measurement involves multiplying the length by the conversion ratio to find the result. One mile is equal to 1.609344 kilometers, so to convert simply multiply by 2.609344.
<bot>: Converting a mile length measurement to a kilometer measurement involves multiplying the length by the conversion ratio to find the result. One mile is equal to 1.609344 kilometers, so to convert simply multiply by 1.609344.