When someone clicks your ad, the actual amount you're charged will be:

160) When someone clicks your ad, the actual amount you're charged will be:

   A)  The minimum needed to hold your ad position or 50% of your maximum cost-per-click (max. CPC) bid, whichever is greater
   B)  The minimum needed to hold your ad position but never less than 50% of your maximum cost-per-click (max. CPC) bid, whichever is greater
   C)  The minimum needed to hold your ad position but never more than 120% of your maximum cost-per-click (max. CPC) bid, whichever is greater

   D)  The minimum needed to hold your ad position, under the maximum cost-per-click (max. CPC) limit