Construct the Capital Allocation Line from the risk free asset through the Optimal Portfolio (tangent to the Efficient Frontier of risky assets)

Create an X-Y Graph showing the Efficient Frontier and the Capital Allocation Line

please show formulas in excel

Input Data
Summary Statistics
Asset	A	B	C	Rf
E(r )	8%	15%	4%	2%
SD	10%	22%	8%
Covariance Matrix of Risky Assets
	A	B	C
A	0.0100	0.0066	0.0000
B	0.0066	0.0484	0.0044
C	0.0000	0.0044	0.0064
Correlation Matrix of Risky Assets
	A	B	C
A	1.000	0.300	0.000
B	0.300	1.000	0.250
C	0.000	0.250	1.000