An advertiser runs a report at the Campaign level and includes invalid clicks statistics. The report indicates that 20% of clicks received during the selected time period were invalid. This means that the invalid clicks were:

An advertiser runs a report at the Campaign level and includes invalid clicks statistics. The report indicates that 20% of clicks received during the selected time period were invalid. This means that the invalid clicks were:

  A)  filtered out of the account before they accrued cost
  B)  charged to the account
  C)  removed as a result of a proactive investigation
  D)  credited to the account