What two video ad formats are optimised for engagement and designed to help customers think of you first when they're looking to buy? 

• Skippable in-stream ads and bumper ads 
• Skippable in-stream ads and in-feed video ads 
• Non-skippable in-stream ads and skippable in-stream ads 
• Non-skippable in-stream ads and in-feed video ads 

Answer: Skippable in-stream ads and in-feed video ads