What command would rebuild the ld.so.cache file?

What command would rebuild the ld.so.cache file?

A.
ldd

B.
ldconfig

C.
ld.so.cache -rebuild

D.
ld

Explanation:
ldconfig creates the necessary links and cache to the most recent shared libraries found in the
directories specified on the command line, in the file /etc/ld.so.conf, and in the trusted directories
(/lib and /usr/lib). The cache is used by the run-time linker, ld.so or ld-linux.so. ldconfig checks the
header and file names of the libraries it encounters when determining which versions should have
their links updated.