Before conducting a literature search in Medline, PubMed, or Cumulative Index to Nursing and Allied Health Literature (CINAHL). it is important to remember which of the following? O In most cases, the best search results will be returned if you search an electronic database with one keyword. O In most cases, the best search results will be returned if you search an electronic database with one specific phrase. O In most cases, the best search results will be returned if you search using multiple keywords, exact phrases, subject headings, and limiters all together in your initial search. O In most cases, it is preferable to search using the electronic database's system of controlled vocabulary subject headings