John works as a Network Administrator for Perfect Solutions Inc. The company has a Linux-based network. John is using a
dual-CPU system with an Adaptec dual-AIC7895 SCSI controller. He wants to add new hardware to the existing Linux
operating system. However, before doing so, he wants to verify which resources are being used by the existing devices so that
he can check whether adding any new hardware can be a cause of a hardware/software conflict or not. Which of the following
commands can John use to accomplish his task?

A.
cat /proc/interrupts

B.
cat /proc/partitions

C.
mount | column -t

D.
mount -t smbfs -o fmask=666,guest //windows_box/share /mnt/share