You Are Trying to Do a Reference Check for a Potential

You are trying to do a reference check for a potential new hire, but when you contact the candidate's most recent supervisor by phone, he will only offer the candidate's dates of employment with that company. What should you do?

A) Thank the manager and end the phone call.
B) Ask if the manager would be willing to do an in-person interview.
C) Quickly ask the manager if he would hire that candidate again.
D) Quickly ask the manager if the candidate was ever disciplined in a serious way.