Based on the following scenario, specify the suitable Architectural Pattern for the application with justification. Zain Company willing to launch "ZAIN Pay" for payment and money transaction services. The system shall have many levels of security. The first security level should provide two factors authentication: using password and SMS code. The authentication will lead to a display of a set of services. At this level, a "Sentinel" will monitor the user actions and behavior to detect a possible identity theft (by hackers for example). To prevent "man in the middle attach", all communications between the user and the system should be encrypted. Finally, the Database will be protected and all the data will be stored encrypted. Answer: Justification: