A B2B customer notices they have a large number of subscribers marked as 'Held'. During troubleshooting, they realize these were soft bounces from overwhelming the email servers of many of the small companies with which they do business. What step(s) should the customer take to move those subscribers back to 'Active'?

A. Extract subscribers who have a status of 'Held', then import subscribers as 'Active'.

B. Use Contact Builder to mass update all 'Held' subscribers to 'Active' status.

C. Subscribers with a status of 'Held' should be re-enabled by contacting support.

D. Use a SQL query to change all subscribers with a status of 'Held' to 'Active' in All Subscribers.