Add On vs Discount Convention to compute BEY

CFA Level I Fixed Income
#1

Which provides the highest return:

1: Quoted rate = 5.78%, 360 day basis, discount convention

2: Quoted rate = 5.80%, 365 day basis, discount convention

3: Quoted rate = 5.96%, 365 day basis, add on convention

How are the BEY’s computed for each scenario, and why is the Add On BEY the same as the quoted rate?

Thanks!