C is correct.
Answer URL no longer appears to be valid, however man sysctl provides the following:
DESCRIPTION
sysctl is used to modify kernel parameters at runtime. The parameters available are those listed under /proc/sys/. Procfs is required for
sysctl support in Linux. You can use sysctl to both read and write sysctl data.
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nicknameisalreadytaken4444
3 weeks ago