How should a consultant meet the requirement?

Universal Containers has implemented Salesforce for all of its sales associates. All Sales associates are required to select the win or loss status every dosed Opportunity. Managers like to measure the win ratio for all of the sales associates.

How should a consultant meet the requirement?
A . Build a custom report on Opportunity with custom summary formulas to show win/loss ratio.
B . Create a custom formula held on Opportunity to capture the win ratio for Opportunities.
C . Ensure that all managers have access to the standard Win/Loss report.
D . Build a custom lightning component to show the win ratio based on won Opportunities.

Answer: A