Read the dictionary entry. Etymology

Et`y*mol"o*gy\ n.; pl. [M. E. etimologie, from O. F. ethimologie, from M. L. ethimologia, from L. etymologia, from Gr etumologia : etumon],

According to this entry, what is the etymology of the word "etymology"?

It came from the Greek "etumon" and was introduced into English via Latin as "etimolgie."
It came from the Latin "etymologia" and was introduced into English as "ethimologie."
It originated as a Middle English word, then was introduced into Old French, then Latin and finally Greek, changing form slightly with each introduction.
It originated as a Greek word, changed its form slightly in early and again in Medieval Latin, kept that form in Old French and changed again when it was introduced into Middle English.