The Details of All Applicants and Interview Notes on All

The details of all applicants and interview notes on all candidates during a recruitment process should be kept in a locked file because:

A) you may want to interview a candidate in the future for a different position.
B) a candidate may complain that you have interviewed them unfairly, and your notes can help you dispute their claim.
C) the successful candidate may renege on their original acceptance, and so the next highest ranked candidate, if suitable, may then be offered the position.
D) it is an organisation's responsibility to keep each candidate's personal information confidential.
E) All of these responses are correct.