Decomposition is the subdivision of projec

问题：

Decomposition is the subdivision of project deliverables into smaller, more manageable components until the work and deliverables are defined at the work package level. This is a valuable tool for define scope. However, decomposition may not be possible for a deliverable or subproject if:

A) The deliverable or subproject is very complicated.
B) The deliverable or subproject is already being produced.
C) The deliverable or subproject will be accomplished after a very long time (i. e. far into the future).
D) None of the above: Decomposition of deliverables is always possible.