What steps should Lenoxsoft take to achieve these requirements?

LenoxSoft has a training portal for customers. A Pardot page action changes a Prospect’s Engagement custom field to Engaged for any prospects who views the page. Customer who regularly engage with the portal have more success with the platform, and those with low engagement have a high rate of attrition. To encourage engagement with the portal, Lenoxsoft wishes to use this custom field as the basis to develop a Training Engagement Program that encourages prospects to sign up for a live webinar which promotes the portal.

They have the following requirements.

– Prospects with no Engagement custom field value should be added to the Training Engagement Program

– If Prospects register for the Webinar and view the training portal, they are removed from the Training Engagement Program.

What steps should Lenoxsoft take to achieve these requirements?
A . Create an automation rule with the criteria :: Prospect custom field : engagement:: blank :: Action if:: Add to List
B. Create a dynamic list with the criteria :: Webinar:: Successful & Custom Prospect custom field:: engagement:: engaged :: Action of:: Remove from list Create an automation rule with the criteria :: Prospect custom field : engagement:: blank:: Action if:: Add to List
C. Create a completion action with the criteria :: Webinar:: Successful & Custom Prospect custom field :: engagement:: engaged :: Action of:: Remove from list Create an automation rule with the criteria :: Prospect custom field : engagement:: blank :: Action if:: Add to List Create a segmentation rule with the criteria :: Webinar:: Successful & Custom Prospect custom field :: engagement:: engaged :: Action of:: Remove from list
D. Create an automation rule : Prospect custom field [Engagement] is blank | Add to List Create an automation rule: Prospect webinar is attended webinar AND Prospect custom field [Engagement] is engaged | Remove from list

Answer: B