Answer: AWS Enterprise Support, AWS Enterprise On-Ramp Support

The correct answers are AWS Enterprise Support (A) and AWS Enterprise On-Ramp Support (B). Both of these premium support plans offer 24/7 support and a response time of 30 minutes for business-critical incidents, which meets the company's requirement for a rapid response if business-critical systems go down. Additionally, they provide consultative review and guidance for applications during the migration, as required by the company. AWS Developer Support (C) and AWS Basic Support (D) do not offer the same level of response time or consultative services, making them less suitable for the company's needs.

Author: LeetQuiz Editorial Team