According to the word entry, what is the language of origin for the word impeccable?

im•pec•ca•ble (im-ˈpek-ə-bəl) adj. 1: Having no flaws; perfect. 2: Incapable of wrongdoing. [Latin impeccabilis: in-, not; see in-1 + peccare, to sin.]

A.
Latin

B.
modern English

C.
Middle English

D.
Old English