Which of the following statements is true?a. Old paper documents, which were previously only available offline, are increasingly being imported and becoming available on the Internet.b. Information that may not be retrievable today may be retrievable tomorrow due to changes in terms of service, public policy, law, and technical privacy settings.c. Improvements in searching techniques enable search engines to gather information from, and make meaningful connections between, a greater number of data sources.d. All of the above