Shea Company has 100,000 shares of 6%, $50 par value, cumulative preferred stock. In 2018, no dividends were declared on preferred stock. In 2019, Shea had a profitable year and decided to pay dividends to stockholders of both preferred and common stock. If they have $750,000 available for dividends in 2019, how much could it pay to the common stockholders?
a. $750,000
b. $450,000
c. $150,000
d. $0