Which one of the following statements is a rule of Scrum that the team should follow when it comes to Sprint duration?

You are the Scrum Master of the JKM Project and your Development Team has asked to change some rules about the duration of the Sprints.

Which one of the following statements is a rule of Scrum that the team should follow when it comes to Sprint duration?
A . Multiple Scrum teams can have sprints of different duration in one project.
B. When possible, Sprints should start on a Tuesday rather than a Monday.
C. The Sprint duration should not change once the project begins.
D. Multiple Scrum teams, in one project, can start their Sprints as soon as the Development Team is assembled.

Answer: C