4. Consider a portfolio consisting of 2 assets with a fixed correlation coefficient in a Markowitz environment. If the weight of the 2 assets is varied, the expected portfolio return would be and the expected portfolio standard deviation would be ?

a. Nonlinear, elliptical

b. Nonlinear, circular

c. Linear, elliptical

d. Linear, circular

e. Circular, elliptical

f. All of the answers could be correct depending on the weights of the 2 stocks

g. None of the above answers is correct