$1.$ Why might a corporation use a special category such as founders' stock in issuing common stock? Explain in details.

$2.$ If common stockholders are the owners of the company, why do they have the last claim on assets and a residual claim on income? Explain in details.

$3.$ Preferred stock is often referred to as a hybrid security. What is meant by this term as applied to preferred stock? Explain in details.