Which of the Following Is True of Search Engine Optimization

Which of the following is true of search engine optimization and search engine marketing?

A) Search engine optimization involves buying keywords known as AdWords for which consumers are likely to search.
B) Search engine marketing refers to a set of techniques that helps ensure that a company's web pages are ranked highly when consumers search for information using a search engine.
C) Organic search is driven by proprietary algorithms which are similar to every search engine.
D) The results of a company's effective use of search engine optimization are that a company's web pages rank higher in the results returned from consumers' searches.