For Data Input Activities Associated with Form Fill-In, Familiarity with the To-Be-Entered

For data input activities associated with form fill-in, familiarity with the to-be-entered data could be a source for errors. In the following scenarios about entering a patient's data in a clinic registration system, which provides the most possible source for an error of misspelling a patient's name?

A) a patient enters into a clinic and uses an on-site computer by herself to change her last name after married;
B) a patient enters into a clinic and accesses a computer to input her name with a blank form;
C) a patient enters into a clinic, and spells her name verbally for a clerk to enter it into the patient information system;
D) a patient calls a clinic with a voice recognition system to change her last name after married;
E) a patient visits the Web site of a clinic and registers his/her personal information using an online form.