A. When Chrome is running, the update occurs within the first few minutes of launching Chrome and then again every few hours Updates occur when users sign into the Chrome Web Store

B. Extensions only update when the user manually initiates the update process from the Chrome Web Store's extension management page

C. When Chrome is not running, the update occurs within the first few minutes of OS loading and then again every few hours when a new version is available in the Chrome Web Store, even when Chrome is not running

D. Extensions update immediately whenever the developer publishes a new version to the Chrome Web Store, regardless of whether Chrome is running