Portfolios management question

CFA Level I
#1

Can anyone explain what is the difference among CAL vs. CML vs. SML?

I felt confused when I did the mock exam .

Thanks

#2

I wrote an article on these three lines that explains them quite well: http://www.financialexamhelp123.com/cal-vs-cml-vs-sml/

Full disclosure: as of 4/25 I’ve installed the subscription software on my website, so there’s a charge for viewing the articles.