How can John add the required Netcool/OMNIbus libraries to the shared library path?

IBM Tivoli Netcool/OMNIbus (Netcool/OMNIbus) is supposed to run as user ncosys on a 64-bit Linux server. The Netcool/OMNIbus process agent is running as root. The admin user, John, is a member of ncoadmin group and needs to be able to administrate the Netcool/OMNIbus application.

How can John add the required Netcool/OMNIbus libraries to the shared library path?
A . add $NCHOME/platform/linux2x86/lib64 to $L1BPATH
B . run nco_add_shared_libs $NCHOME/platform/linux2x86/lib64
C . add $NCHOME/platform/linux2x86/lib64 to $LD_LIBRARY_PATH
D . run/bin/libloader $NCHOME/platform/linux2x86/lib64

Answer: C