The employer of a client on the psychiatric unit calls the nursing station inquiring about the client’s progress. The nurse doesn’t know if the client has given consent to allow the staff to give information out to callers on the phone. Which of the following would be the nurse’s best response ？（）
A．"I’m not permitted to discuss her progress. "
B．"I’ll give you the name and telephone number of her physician. "
C．"I’ll have her call you. "
D．"I can’t confirm whether your employee is a client here. "