เฉลยข้อสอบ Google AdWords Search Network – How does target cost-per-acquisition (CPA) bidding determine the optimal cost-per-click (CPC) bid?

How does target cost-per-acquisition (CPA) bidding determine the optimal cost-per-click
(CPC) bid?

a. It uses conversion history to set higher bids when a conversion is more likely
b. It bids a static CPC value based on the current maximum CPC settings
c. It sets CPC bids as one-tenth of the current CPA bid setting
d. It adjusts CPC bids based on existing bid adjustments

วิเคราะห์ – conversion history นำไปเพิ่มราคาประมูล