An online music streaming service wants to find out which popular Beatles songs are frequently downloaded together by its users. The service collects the download logs for 100 users over the past month, where the download logs show which songs were downloaded during the same session. A portion of the data is shown in the accompanying table.

Perform association rule analysis using the following settings. 

a. Use a minimum support of 20 and a minimum confidence value of 60%. Sort the rules by lift ratio. Report and interpret the lift ratio of the top rule. 

b. Use a minimum support of 15 and a minimum confidence value of 50%. Sort the rules by lift ratio. Report and interpret the lift ratio of the top rule.  

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User 1 User 2 Yesterday, All You Need Is Love... Here Comes the Sun Hey Jude, Come Together... Here Comes the Sun 1 I User 100 Hey Jude, Come Together... Here Comes the Sun