Which of the following is true about Page Layout? Select all that apply. a.True or False The Main Content (MC) of a webpage may include user-generated content, such as customer reviews that were written by users and added to a shopping page. b.True or False Supplementary Content (SC) is usually an important part of a webpage (but is not required for a page to receive a High or even Highest rating). c.True or False If Ads are disguised as Main Content (MC), the page should get a page quality (PQ) rating of Low or Lowest. d.True or False It is not necessary for webpages to have navigation links for users can find out more about the website.