Question: What action does the Application Function (AF) take when modifying a media component if a content version was previously assigned to it, according to 3GPP policy and charging control specifications?
Option 1: The AF retains the previous content version for backward compatibility.
Option 2: The AF assigns a new content version but only updates the changed content.
Option 3: The AF assigns a new, unique content version and includes all content related to that media component.
Option 4: The AF notifies the PCRF without updating the content version.
Explanation: This is correct because, in the policy and charging control context, when a media component is modified with a previously assigned content version, the AF must assign a new, unique content version each time for consistency. Additionally, to guarantee proper installation regardless of previous outcomes, all related content must be included with each update, hence the need for comprehensive content inclusion with each new version.