R = {1, 3, 5, 7} and S = {2, 4, 6, 8}. Find R U S.

• A.{ }
• B.{1,2,3,5,6,8}
• C.{1,2,3,4,5,7,8}
• D.{1,2,3,4,5,6,7,8}
• E.{1,2,3,4,5,6,7,8,9,10}