The stocks in the portfolio optimization model are all positively correlated. What happens when they are negatively

Question:

The in the optimization model are all positively correlated. What happens when they are negatively correlated? Answer for each of the following scenarios. In each case, two of the three correlations are the negatives of their original values. Discuss the differences between the optimal portfolios in these three scenarios.
a. Change the signs of the correlations between 1 and 2 and between 1 and 3.
b. Change the signs of the correlations between 1 and 2 and between 2 and 3.
c. Change the signs of the correlations between 1 and 3 and between 2 and 3.

Stocks
Stocks or shares are generally equity instruments that provide the largest source of raising funds in any public or private listed company's. The instruments are issued on a stock exchange from where a large number of general public who are willing... Portfolio
A portfolio is a grouping of financial assets such as stocks, bonds, commodities, currencies and cash equivalents, as well as their fund counterparts, including mutual, exchange-traded and closed funds. A portfolio can also consist of non-publicly...