Please help, for AP Human Geography, I only have an hour left. :/ The excerpt is the English translation of a Vietnamese folk song.

While seedlings for the summer crop are not old
when they are three months of age,
Seedlings for the winter crop are certainly not young
when they are one-and-a-half months old.

Which statement best describes this folk song?

a. It likely originated anonymously and was used to orally convey information about agricultural technology.
b. It was likely written by a musician and sold to farmers who wanted information about agricultural technology.
c. It likely originated anonymously and spread to other cultures where agriculture was important.
d. It likely was written by a farmer and sold to the public for use in special music festivals.
e. It likely began as a tribal story and spread to other cultures looking for agricultural technology tips.