Which of the following statements is correct?

a) lower beta stocks have higher required returns.

b) two securites with the same stand-alone risk must have the same betas.

c) A stocks beta indicates its diversiable risk

d)A stocks market risk can be diversifed if you hold more securites in a portfolio

e) If one stock is held in a well-diversified protfolio, we will focus on its beta instead of stand-alone risk o.