Static & Kinetic Friction - Part III

Below is graph of the friction force exerted by the table on the box.
A. Label times a-f that match the free-body diagrams in the previous problem.

B. If the mass of the box is 3.0 kg, the maximum fs is 10 N, and fk has an average of 6.0 N, find the coefficents of static and kinetic friction.