Please refer to the image

Use the following data

$($a$)$ What are the weights for a portfolio $V$ with ${}_V=40\%$

$($b$)$ What is the risk ${}_V$ for this portfolio

Using the same data:

$($a$)$ Compute the weights for the portfolio with minimum risk.

$($b$)$ What is the expected return?

$($c$)$ Does this portfolio include short selling?