Which of the Following Flowcharts Best Summarizes Romer's Description of Ideas

Which of the following flowcharts best summarizes Romer's description of ideas and growth?

A) Ideas $\to$ Nonrivalry $\to$ Increasing returns $\to$ Imperfect competition
B) Ideas $\to$ Capital $\to$ Constant returns $\to$ Imperfect competition
C) Capital $\to$ Rivalry $\to$ Increasing returns $\to$ Perfect competition
D) Ideas $\to$ Rivalry $\to$ Increasing returns $\to$ Perfect competition
E) Capital $\to$ Nonrivalry $\to$ Decreasing returns $\to$ Imperfect competition