1. A communication apparatus comprising: a reading unit which reads original document data from a page of a transmission original document; a transmission unit which transmits original document data read by the reading unit to a designated destination; an acquisition unit which wirelessly acquires identification information capable of identifying a specific original document transmitted by the transmission unit in one communication from a wireless tag attached to each of a plurality of pages of a target original document; and an extraction unit which extracts the specific original document from the target original document based on the identification information acquired by the acquisition unit.