During the decommissioning phase of a hardware project, a security administrator is tasked with ensuring no sensitive data is released inadvertently. All paper records are scheduled to be shredded in a crosscut shredder, and the waste will be burned. The system drives and removable media have been removed prior to e-cycling the hardware. Which of the following would ensure no data is recovered from the system drives once they are disposed of?
A. Overwriting all HDD blocks with an alternating series of data.
B. Physically disabling the HDDs by removing the drive head.
C. Demagnetizing the hard drive using a degausser.
D. Deleting the UEFI boot loaders from each HDD.