Instructions: In this task, you need to answer the given multiple-choice question on the physics. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Input: Problem: convert 300 miles into km ?
Options: a ) 360 km , b ) 480 km , c ) 510 km , d ) 320 km , e ) 500 km
Output:
b