I too am going to duck. I'm not a finance professor. This is the domain of finance professors as opposed to economists. I don't mean to put down economists, who are very good, but finance professors literally do teach and study the whole issue of the cost of capital.
It's a very complex area, and I do agree with Ms. Mullen, who said that it varies on a project-by-project basis because the risk varies on a project-by-project basis. But I can't tell you the mechanics of the finance algorithms that are used to measure or evaluate the cost of capital in a particular project.