please answer both these thumbs up

QUESTION 3 For general information about the health risks of smoking, which sources would be credible for your personal research (select all that apply)? a. Health and beauty magazine article. b. Tweet from U.S. Surgeon General's (@Surgeon_General) Twitter account. c. Article from the Centers for Disease Control and Prevention (www.cdc.gov). d. Statistics and other information from the website www.marlborocigarettes.us. QUESTION 4 Scenario: You are writing a research paper on the effects of secondhand smoke on the elderly. Select the most appropriate source and authority for your investigation. O a. Article written in 1990 by a renowned cardiologist. The article includes a few references to previous studies, but it focuses mainly on the methods and data of a wide-scale study performed by the author that included some elderly subjects. O b. Article written in 2014 by a pediatrician, published in a highly respected pediatric journal, and contains citations to several other similar studies. O c. Article written in 2005 by an elderly smoker whose non-smoking husband died of lung cancer. The article was published in The New York Times. O d. Article written in 2010 by a cardiologist studying a small retirement community. The article includes references to other similar studies and was published in a respected journal