A company stores all of its data in the cloud. All company-owned laptops are currently unmanaged, and all users have administrative rights. The security team is having difficulty identifying a way to secure the environment. Which of the following would be the BEST method to protect the company's data?

A. Implement UEM on all systems and deploy security software.
B. Implement DLP on all workstations and block company data from being sent outside the company.
C. Implement a CASB and prevent certain types of data from being downloaded to a workstation.
D. Implement centralized monitoring and logging for all company systems.