Question: Please draw a USE CASE DIAGRAM and a SEQUENCE DIAGRAM for the following: A user sends a placeOrder request to the system. The user needs

Please draw a USE CASE DIAGRAM and a SEQUENCE DIAGRAM for the following:

A user sends a placeOrder request to the system. The user needs to be authenticated. If the user is authenticated then his request is handlers by the backend system. Consider that there is a database with user credentials. The users can be authenticated user user name and password or just a PIN. In special cases can be authenticated by calling an agent on the phone.

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