Exercise 16-15 Carla Inc. uses a calendar year for financial reporting. The company is authorized to issue 8,680,000 shares of $10 par common stock. At no time has Carla issued any potentially dilutive securities. Listed below is a summary of Carla's common stock activities. 1. 2. 3. Number of common shares issued and outstanding at December 31, 2015 Shares issued as a result of a 10% stock dividend on September 30, 2016 Shares issued for cash on March 31, 2017 Number of common shares issued and outstanding at December 31, 2017 A 2-for-1 stock split of Carla's common stock took place on March 31, 2018 2,140,000 214,000 1,820,000 4,174,000 4. Compute the weighted average number of common shares used in computing earnings per common share for 2016 on the 2017 comparative income statement. shares Compute the weighted average number of common shares used in computing earnings per common share for 2017 on the 2017 comparative income statement. shares Compute the weighted average number of common shares to be used in computing earnings per common share for 2017 on the 2018 comparative income statement. shares Compute the weighted-average number of common shares to be used in computing earnings per common share for 2018 on the 2018 comparative income statement. shares Click if you would like to Show Work for this question: Open Show Work