Which revised sentence includes a transition that links connected ideas more clearly

A. Participants looked at a poster that said, "Eat Avocados—Fight Cholesterol!"
B. Dietitian Louisa Koken explained, "A diet that includes healthy fats, such as those found in avocados, can help cut bad, or LDL, cholesterol."
C. She said that research done at Pennsylvania State University shows that people with high LDL cholesterol reduced "bad" cholesterol when they replaced red meat with avocados.
D. The study, titled "Bite Back at Cholesterol," appeared in the January 2012 issue of the Journal of the American Heart Association