3 Answers
+ 2
Intermediate then Core
+ 3
https://www.sololearn.com/discuss/2809914/?ref=app
https://www.sololearn.com/discuss/2756826/?ref=app
https://www.sololearn.com/discuss/2864925/?ref=app
https://www.sololearn.com/discuss/2935335/?ref=app
https://www.sololearn.com/discuss/2772726/?ref=app
https://www.sololearn.com/discuss/2747207/?ref=app
+ 3
https://www.sololearn.com/post/1446016/?ref=app