which two of the following are areas of specific consideration when addressing objectives and requirements for an SoS? a. the system-level technical certifications which must be obtained during program's life-cycle, b. the SoS SE team has the added challenge of working with the constituent systems as they address their system requirements , which may not align with the SoS objectives, c. SoS are often cast in terms of broader capability objectives, d. the plan to align prime contractor's systems engineering management plan (SEMP) with the program management office (PMO) SEP