Which of the Following Is Not True About Search Engine

Multiple Choice

Which of the following is not true about search engine advertising?

A) Spending on search engine advertising constitutes over 45% of all online advertising spending.
B) The top three search engine providers supply over 95% of all online searches.
C) The click-through rate for search engine marketing has been steady over the years.
D) Search engine advertising is the fastest growing type of online advertising.