Installing Vertica on HP cloud (need confirmation on which unix flavour is supported)

Hello Experts, I am trying out my hand at installing the latest community edition. On my HP cloud account, the flavours available are attached in the image - need your confirmation on which one would be the best fit for installing the CE. I tried with one of the Ubuntu flavours, but got a message saying "this version of the OS is unsupported". Thanks a lot for the help !