Given the following information,

a$)$ What are the expected returns for stock $A,B$ and $C,$ respectively? List the formula, input numbers and calculate answers

b$)$ What is the standard deviation$/$risk for stock $A?$ List the formula and input numbers, NO calculation needed

c$)$ What is the portfolio return given that you have $$10,000,$ allocate $$3,000$ in stock A and $$3,000$ in stock $B$ and the rest in stock $C?$ List the formula and input numbers, NO calculation needed.

d$)$ The principle of diversification states that as the number of stocks under one portfolio increases, the portfolio risk more likely A$)$ increases or B$)$ decreases?