An engineer installs an SMP (Symmetrical Multi-Processing)-compliant network operating system on a dual-processor server. The BIOS detects two processors, but only one processor is recognized by the network operating system. Which action should the engineer take to enable the SECOND processor?

A.
configure the network operating system kernel for SMP (Symmetrical Multi-Processing) support

B.
update the stepping level on the second processor

C.
apply the latest network operating system patches

D.
update the BIOS to the current version