If,during a Reference Check,a Former Employer or Supervisor Will Only

If,during a reference check,a former employer or supervisor will only verify dates of employment,an employer is encouraged to ask the following question to learn more about the candidate:

A) "Would you hire this person again?"
B) "Is this candidate a qualified worker?"
C) "Did you give this candidate positive evaluations?"
D) all of the above
E) none of the above