Having a risk evaluation automatically fill out based on results of two drop down options

Hi Guys,

Sorry if this is simple, but i'd like a risk assessment matrix to fill automatically based on the combination on two drop down options, so if "L1" and "C2" are entered into the sheet, the result would be "High", but if it was "L1" and "C4" the result in the Column E would be "Extreme". Is there a quick way to do this? I'd like it to be automatic for staff to fill out quickly

I've messed around with indexing and IF AND functions but haven't found anything that works.