Given the task definition and input, reply with output. In this task, you need to provide the correct option for a given problem from the provided options.

Problem: profits in the partnership of bess , bill and bob are shared in the ratio 1 : 2 : 3 . if bill ' s share of the profits is $ 300 , what is bob ' s share ?
Options: a ) $ 150 , b ) $ 900 , c ) $ 600 , d ) $ 450 , e ) none
b