Figure $12\mathrm{.}11$ shows plots of monthly rates of return on three stocks versus the stock market index. The beta and standard deviation of each stock is given beside its plot.

a$.$ Which stock is safest for a diversified investor?

multiple choice $1$

Ford

Pfizer

Walmart

b$.$ Which stock is safest for an undiversified investor who puts all her funds in one of these stocks?

multiple choice $2$

Ford

Pfizer

Walmart

c$.$ Consider a portfolio with equal investments in each stock. What would this portfolio$$s beta have been? $($Do not round intermediate calculations. Round your answer to $2$ decimal places.$)$

d$.$ Consider a well$-$diversified portfolio made up of stocks with the same beta as Ford. What are the beta and standard deviation of this portfolio$$s return? The standard deviation of the market portfolio$$s return is $20\%.($Do not round intermediate calculations. Round your beta answer to $2$ decimal places. Enter your standard deviation answer as a percent rounded to $1$ decimal place.$)$

e$.$ What is the expected rate of return on each stock? Use the capital asset pricing model with a market risk premium of $8\%.$ The risk$-$free rate of interest is $4\%.($Do not round intermediate calculations. Enter your answers as a percent rounded to $2$ decimal places.$)$

$*$Please make sure to get this all right. I can't afford to have it wrong.