On January 2, 2021, Waterway Industries issued at par $10900 of 6% bonds convertible in total into 1000 shares of Waterway's common stock. No bonds were converted during 2021. Throughout 2021, Waterway had 1000 shares of common stock outstanding. Waterway's 2021 net income was $4200, and its income tax rate is 25%. No potentially dilutive securities other than the convertible bonds were outstanding during 2021. Waterway's diluted earnings per share for 2021 would be (rounded to the nearest penny) $2.35. $4.69. $2.40. $2.10