The close project or phase process is essential to overall project planning. What is considered one of the most important steps in closing project or phase

A) Insuring that plans are produced to implement the project by phases.
B) Issuing work orders so that financial data can be collected.
C) Transition the lease of equipment to the owner.
D) Satisfying the contractual obligations.

ECC切换是以生产序号为切换点。