Consider the following four assets which have rates of return in six equally possible scenarios.

Assets	Scenarios
	Awful	Poor	Mediocre	Okay	Good	Great
Asset A	-2%	0%	2%	4%	6%	10%
Asset B	-1%	2%	2%	2%	3%	3%
Asset C	-6%	2%	2%	3%	3%	1%
Asset D	-4%	2%	2%	2%	2%	20%

Based on their risk and return characteristics, rank the asset from best to worst to invest in.

Please show the steps of the calculation without using excel