Week 15 RB advice. Which should I start Reggie Bush, Sammy Morris, Kevin Faulk, or Derrick Ward.?

I am starting only two of these players. Someone told me that Derrick Ward was injured but I haven't heard any more about it. Any thoughts about Brandon Jacobs not playing this week? It seems to me that If Jacobs doesn't start, then Ward would be a viable option. What thinks You?