A company is planning to deploy a virtual desktop infrastructure (VDI) to support its remote workforce. The solution must be scalable to accommodate fluctuating numbers of users, easily manageable to reduce IT overhead, and cost-effective. Additionally, the company requires the solution to support multi-session Windows 10 deployments and provide built-in security features. Considering these requirements, which Azure service should you recommend? Choose the BEST option. (Choose one correct option from A to D)