Follow print. Since the print copy does not list each lettered item on a new line, you should do the same. (Nemeth Code does not address this format.)
I notice that the print copy has left (c) alone at the end of line 5. Personally, I would be sure each letter is on the same line as the math expression which follows it (or at least one word of the sentences in #30.) There is no rule stating this preference, however, just to be clear.
Regarding the semicolons, you need to include them. Transcribers don't have the option of editing the text.
Thank you for all of the interesting questions!