Ribbon BestAvailableRule Implementation

# Description

<img width="906" alt="Screen Shot 2020-11-11 at 9 18 47 PM" src="https://user-images.githubusercontent.com/48402988/98816338-7d734280-2463-11eb-9559-7ac1f7bdcf2f.png">

# Acceptance Criteria

90% Test Coverage