A Former Employee of Your Firm Was Dismissed When It

A former employee of your firm was dismissed when it was suspected that she had stolen from the petty cash account.It could not be proven,but suspicions were strong enough that the firm decided to let her go.She has now applied at another firm,and listed your firm as a reference.What should you do?

A) tell the prospective employer about your suspicions, or you might be held liable if she steels money from them and you didn't tell them
B) don't tell them about your suspicions; just give her a glowing reference
C) don't tell them about your suspicions; just give a "service" reference
D) any of these is an acceptable choice