How would you enable this requirement?

You want to configure an application so that users can shop for products anonymously without authentication,
and must then authenticate after they enter the checkout process. How would you enable this requirement?
(Choose the best answer.)

A.
Grant roles access rights to the task flow containing the checkout process.

B.
Ensure the task flow containing the shopping process is unbounded.

C.
Remove ADF Security for the application and replace it with Java EE Security for the task flow containing
the checkout process.

D.
Add a view containing a login form to the task flow containing the checkout process.

Explanation:
For example, the StoreFront module of the Fusion Order Demo application secures the web pages contained
by the checkout-task-flow task flow to grant access only to logged-in users (also known as authenticated
users). At runtime, the ADF Security framework performs permission checking against the task flow’s security
policy to determine the user’s right to complete the view operation. In this case, the security policy must grant
the view permission to the user if they are to complete the checkout process.
https://docs.oracle.com/cd/E21764_01/web.1111/b31974/adding_security.htm#ADFFD877