Exam CISA topic 1 question 1630 discussion

While D is important for justifying the chosen solution, C best demonstrates that the organization performed due diligence by considering and comparing multiple options during the vendor selection process.

I am leaning toward C with 4dfe, this shows that true due diligence went into consideration.

Both C. Alternative solutions and D. Cost-benefit analysis are important components indicating due diligence. However, the alternative solutions component tends to provide a broader view of the due diligence process as it implies the consideration and comparison of different vendors or solutions, addressing multiple factors (financial, technical, operational) rather than just the financial perspective.

A cost-benefit analysis is the component of a business case that provides the best indication that due diligence was performed during the vendor selection process.