What to install to be up to date?

For the Acrobat Reader DC Continuous Track, I'm trying to understand what I need to install for our users to be up to date.

I understand that we need to install the "DC Base" (so, the Major release from April 6, 2015).  Then what do I need for updates?  There is a 2/12/2018 Continuous release and a then later a 2/23/2018 OOC release.  Do I need to install both the Continuous and any subsequent OOC releases to be up to date or can I install just the latest update, which happens to be an OOC release?