You have not run apt-get on a system for some time, but it has been run on the system before.
What apt-get command would you run to download the latest list of packages, but not the packages themselves?

A.
apt-get build-dep

B.
apt-get mirror-select

C.
apt-get update

D.
apt-get upgrade

E.
apt-get dist-upgrade

Explanation:
Unlike rpm, use option update to load new package lists and upgrade to load new versions of installed packages.