This is a Single Choice Question; skip ahead to question content Incorrect Correct answerYour answer A Bx C D Time Spent: 1 min 59 secs Content & Skills CC5DFC5BCHSIRS1 What causes duplex DNA with a certain (A + T):(G + C) ratio to melt at a higher temperature than comparable length duplex DNA with a greater (A + T):(G + C) ratio? A.Stronger van der Waals forces of pyrimidines B.Stronger van der Waals forces of purines C.Increased π- stacking strength D.Reduced electrostatic repulsion of phosphates