Question 29

Correct answer: A

A.

The concept stage is when the highest percentage of LCC is determined. During this phase, key decisions are made regarding the system's architecture, requirements, and fundamental design approach, which lock in a large portion of the system's overall costs. While actual expenditures may not be high during this stage, decisions made here can determine up to 70-80% of the total life cycle cost. Once these decisions are made, later stages incur costs based on the groundwork established in the concept phase. This is why systems engineering emphasizes the importance of thorough planning and analysis in the concept stage to minimize downstream costs. See INCOSE SE Handbook 5th Ed. section 1.2, pp. 6-8.

B.

During the production stage, the system is manufactured and prepared for operational use, meaning most costs have already been committed. This stage primarily involves capitalizing on the design and decisions made in previous phases. While production can involve high actual costs, the percentage of committed LCC does not significantly increase at this point, as the system’s design is already finalized, and changes are expensive and difficult to implement. See INCOSE SE Handbook 5th Ed. section 1.2, pp. 6-8.

C.

While significant design work occurs during the development stage, most of the critical cost-committing decisions have already been made during the concept stage. See INCOSE SE Handbook 5th Ed. section 1.2, pp. 6-8.

D.

By the time a system reaches the utilization stage, virtually all costs have been locked in, and decisions made in earlier stages (especially in concept and development) drive these costs. See INCOSE SE Handbook 5th Ed. section 1.2, pp. 6-8.