Iredell Company has 2,500,000 shares of common stock outstanding on December 31, 2018. An additional 500,000 shares of common stock were issued on April 2, 2019, and 250,000 more on July 2, 2019. On October 1, 2019, Iredell issued 5,000, $1,000 face value, 7% convertible bonds. Each bond is dilutive and convertible into 40 shares of common stock. No bonds were converted into common stock in 2019. What is the number of shares to be used in computing basic earnings per share and diluted earnings per share, respectively, for the year ended December 31, 2019?
a. 2,875,000 and 2,925,000
b. 2,875,000 and 3,075,000
c. 3,000,000 and 3,050,000