How do you configure this behavior?

You configure an application to allow users to download a mobile app. When users select one of the three supported platforms (Android, iOS, or Windows Mobile), the application opens a new window pointing to the appropriate app store.

How do you configure this behavior?
A . Add a button for each platform and configure an action set for each button. In each action set, specify a click event and add an action that opens the vendor’s URL in a window.
B . Add one button and configure three action sets. In each action set, specify a click event and add an action that opens the vendor’s URL in a window.
C . Add one button and configure one action set. In the action set, specify a click event with three actions to open each vendor URL in a window. Apply a when rule to each action to determine the correct URL.
D . Add three check boxes and one button. For each check box, configure an action set with a click event to set the value of the URL. For the button, configure an action set with a click event to open the URL in a window.

Answer: A