We have the historical returns of two risky assets:

Date	asset_A	asset_B
4/30/2020	-0.1554	0.1363
5/31/2020	0.0851	0.0254
6/30/2020	0.1474	0.1106
7/31/2020	0.1651	0.0074
8/31/2020	0.2166	0.1028
9/30/2020	-0.1025	-0.0674

Calculate stock expected return and variance of return using time-series analysis.

Which asset has a higher total risk?

		A
		B
		Not sure
		They have the same systematic risk