What is the relationship between the three phases of the frictionless selling framework?

They complement each other in such a way that they should all be implemented at the same time.
They are interchangeable so that they can be implemented in any order.
They form a progression, with each successive phase building on the previous one.
Each stage includes the techniques of the previous stages so that you don’t have to think about the previous stages once you leave them.

The correct answer is:

They form a progression, with each successive phase building on the previous one.