Which of the following is MOST likely the issue?

A penetration tester is performing a black-box test of a client web application, and the scan host is unable to access it. The client has sent screenshots showing the system is functioning correctly .

Which of the following is MOST likely the issue?
A . The penetration tester was not provided with a WSDL file.
B . The penetration tester needs an OAuth bearer token.
C . The tester has provided an incorrect password for the application.
D . An IPS/WAF whitelist is in place to protect the environment.

Answer: B