Mary, a finance student at Amity student, holds a portfolio which consists three stocks (one each) of: stock A, stock B, and stock C. Please note the following information about these stocks:

	Stock A	Stock B	Stock C
Price	$120	$84	$96
Return	20%	15%	10%
Standard deviation	0.35	0.1	0.5

Correlation between A and B	0.3
Correlation between B and C	0.2
Correlation between A and C	0.4

Questions:

a- Please calculate the portfolio’s expected return

b- Please calculate the portfolio’s variance and standard deviation