Which footnote is formatted correctly?

2Garrow 403–04 tells readers how King knew at the start of the second attempt that he would cut the march short, but did not inform most of the marchers or even all of the leaders of his plan, which led many in the movement to briefly criticize King.
2. see Garrow 403–04 for criticisms of King for cutting the march short
2. For a detailed account of the criticisms King faced for ending the march, see Garrow 403–04.
2For an account of the criticisms King faced for cutting the march short and not sharing his plan with others in the movement, see Garrow, 403–04.

A footnote is a short text placed at the end of some pages and that provides further information or explanations about concepts, sections or sources that appear in the paragraphs that are before the footnote. In academical writing footnotes allow the author to provide extra information without including it in the main text, which would distract the reader from the main ideas of the text, also, these should be not used excessively in any case.

In terms of format, it is recommended using Arabic numbers (1,2,3,4...) to enumerate the footnotes, followed by a short description of the information the reader can find and after this the author and page numbers. Considering this, the footnote that is formatted correctly is "2. For a detailed account of the criticisms King faced for ending the march, see Garrow 403–04" because this footnote provides a short description of the information the reader can find, without including unnecessary details and then the information related to the author and page numbers, which is the most recommended format.