Correct Answer: AThe customer wants to migrate away from Oracle while staying on Linux and opting for a lower-cost solution. Among the provided options, the HPE DL380 Gen10 running Red Hat Linux Server is an appropriate choice. Red Hat Linux Server provides robust support and compatibility for running SQL databases. The other option for Linux, CentOS, is also a viable option, but Red Hat typically offers more comprehensive enterprise support, which can be crucial for a smooth migration from Oracle. The servers running Microsoft Windows Server do not meet the customer's requirement to stay on Linux.