Options B, D are correct. Continuous service cannot depend on an engineer reaching an unstaffed site hours later. Remove intolerable single points of failure with redundant components and automatic failover or recovery, then validate fault response. Architecture review is most useful when it identifies latent risks before procurement or deployment. Evaluate sizing, network paths, interoperability, resiliency, lifecycle support, documented assumptions and mandatory constraints, keeping actual noncompliance distinct from accepted residual risk. Alternatives based on product preference, unchecked scope changes or deferred validation would weaken the requirement-to-design traceability on which the recommendation depends. Where implementation work follows, document the responsible owner, acceptance test and escalation path. A technically correct design still needs controlled delivery and a supportable operating model to deliver the business outcome. A formal solution review should be evidence based. If data or requirements are ambiguous, record the issue and its consequence; if something is demonstrably noncompliant, require remediation; if the design meets the agreed standard, do not quietly rewrite that standard.

Study Guide Reference: HPE Edge-to-Cloud Fundamentals — Review an HPE Edge-to-Cloud Solution Based on Customer Needs; Design Considerations; Architecting Methodology.