A hard drive is taking a long time to complete file copies. The user suspects that the IDE drive may not be using DMA. Which of the following commands can be used to verify the hard drive connected on /dev/hda has DMA enabled?

A.
grep dma /proc/hdinfo

B.
grep dma /proc/ide/hda/settings

C.
sysinfo /dev/hda

D.
fdisk -l /dev/hda