The DPCI score for size would be 4 in which of the following situations?

A) The project manager and team members have done many similar size projects before.
B) The project size is at the high or low end of the range of project sizes that the organization or team members have done before.
C) The project size is about 50 percent higher or lower than projects the organization or most of the team members have done before.
D) The project size is about 20 percent higher or lower than projects the organization or some of the team members have done before.
E) Neither the organization nor the team members are experienced working on a project this size.

According to the DPCI framework, the score for size is determined based on the degree of difference between the current project size and the size of similar projects that the organization or team members have worked on before. A 50 percent difference in project size is significant enough to warrant a score of 4, indicating that there may be some challenges in adapting to the new size. Therefore, option C is the best choice. Options A and B indicate that the team has experience with similar project sizes and would lead to a lower score. Option D is a smaller difference which would result in a lower score, and option E suggests no experience that matches the size of the project.