Explanation

"No - David's counter offer rescinded Barbera's offer" is the correct answer. Remember: "once a counter offer is made, the original offer is viewed as rejected" - p.6 of the study guide. What this means is when David goes back to Barbera about the £80,000 - he is now the offeror - and Barbera has the option to reject this. David is no longer in a position to accept or reject - Barbera is.