Your work as a project manager at the computer chip manufacturer, developing* microprocessors. ?

As predicted by moore's law each year your companies introduces new models of micro-processors which are more faster and powerful then their predecessors. Microprocessors that are obsolete or do not sell are quickly retired from production. The lifecycle for the microprocessors begins in R&D, extends to manufacturing, and finally ends with phase out. This cycle is often referred to as: A. Feedback loop B. Project lifecycle C. Product developmen D. Product lifecycle