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

Multiple Choice

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

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