During Scrum Retrospective, development team analysed one of the process which they want to improve in the next sprint. They created the plan on how to improve the process efficiency. Where would the team place the work involved in this improvement plan?

A. Product Backlog
B. Sprint Backlog
C. Retrospective Improvement Backlog
D. Since the development team is self-organizing and self-directing, they just do the work involved in the improvement plan in the next sprint