What should the Scrum Master consider doing?

One state on the team Kanban board has people waiting while the previous stage is overloaded.

What should the Scrum Master consider doing?
A . Call for a Team and Technical Agility self-assessment so that the team agrees on improvement actions
B. Ask the team to redesign the board
C. Encourage and coach the people in the under-utilized stage to help with the work of the overloaded stage
D. Request more people on the team to help with the overloaded stage in order to generate work faster for the waiting stage

Answer: C

Explanation:

Scrum Master should encourage and coach the people in the under-utilized stage to help with the work of the overloaded stage