A company runs its production broker BRK1 with the broker administration security disabled. The
company just found that one of the message flows stopped and was not processing any messages.
While checking network logs, the security administrator found that due to a security vulnerability in
the company, a third-party hacker managed to hack into the company’s firewall and then into the
broker from the web. What is the quickest action that the system administrator can take at the
broker application level to stop the hacker with minimal impact on this production broker, while
implementing a permanent way to secure the broker? Run the commands:

A.
mqsichangeproperties BRK1 -b webadmin -o server -n enabled -v truemqsistart BRK1

B.
mqsichangeproperties BRK1 -b webadmin -o server -n enabled -v falsemqsistart BRK1

C.
mqsichangeproperties BRK1 -b httplistener -o server -n enabled -v truemqsistart BRK1

D.
mqsichangeproperties BRK1 -b httplistener -o server -n enabled -v falsemqsistart BRK1