When a competent grantor, who is unable to write, executes a deed using a mark, an affidavit should be obtained from the witnesses, stating which of the following:
I. The contents of the deed were read to the grantor.
II. The grantor, by making the mark, consented to the effect of the deed.
III. The mark was made voluntarily.
IV. The mark was made using an “X”.
The answer is I, II, III
For more information on the proper Notarization of someone signing by a mark, please see the attached link http://members.usnotaries.net/news.asp?AssetID=600