What should this employee do?

An IT employee got a call from one of our best customers. The caller wanted to know about the company’s network infrastructure, systems, and team. New opportunities of integration are insight for both company and customer.

What should this employee do?
A . The employees cannot provide any information; but, anyway, he/she will provide the name of the person in charge.
B . Since the company’s policy is all about Customer Service, he/she will provide information.
C . Disregarding the call, the employee should hang up.
D . The employee should not provide any information without previous management authorization

Answer: D