Respuesta :
The correct answer to this question would be:
ECPC can raise your bid to US $13.
The reason for this is that ECPC finds for ad auctions that are more likely to lead to sales, and then raises your max. ECPC bids up to 30% (after application of whatever bid adjustments that you have set) to compete harder for those clicks.
The correct answer is:
US$13
ECPC looks for ad auctions that are more likely to lead to sales, and then raises your Max. CPC bid up to 30% (after applying any bid adjustments that you've set) to compete harder for those clicks. If a click seems less likely to convert, then AdWords will lower your bid by as much as 100%.
Source and explanation: certificationanswers.com/en/your-average-bid-is-us10-and-youve-enabled-enhanced-cost-per-click-bidding-ecpc-assuming-you-havent-set-any-bid-adjustments-ecpc-can-raise-your-bid-to-which-amount-when-adwords/