You want to advertise your website with Google Ads, and you're thinking of using one of Google's Smart Bidding strategies. Which of the following is a Smart Bidding strategy?

Target CPA (Cost Per Acquisition) is a Smart Bidding strategy that automatically sets bids to help you get as many conversions as possible at or below your target CPA. It leverages machine learning to optimize bids in real time based on various signals. Enhanced impressions is not a Google Ads bidding strategy. Viewable CPM (Cost Per Mille) is a bidding strategy focused on impressions that are deemed viewable, but it's not a Smart Bidding strategy. Manual CPC (Cost Per Click) is a manual bidding strategy where you set your own bids, offering less automation than Smart Bidding.