Marin Company's net income for 2020 is $690,000, and 88,000 shares of common stock were issued and outstanding during 2020 . The only potentially dilutive securities outstanding were 28,000 executive stock options issued during 2019 , each exercisable for one share at $20.00, none of these have been exercised. The average market price of Marin's stock during 2020 was $25.50. (a) Compute diluted earnings per share. (Round answer to 2 decimal places, e.g. 2.55.) Diluted earnings per share $ (b) Assume the same facts as those assumed for part (a), except that 10,000 additional options were issued on October 1, 2020, with an exercise price of $26.50 (the market price of the common stock on that date). The average market price during the last 3 months of 2020 was $29.00. (Round answer to 2 decimal places, e.g. 2.55.) Diluted earnings per share $