Perfor 515-8 Performance-Based Share Option Plan On January 1. 2016, Rhine Company adopts a performance-based share option plan for its 80 key executives. Each executive is granted a maximum of 70 share options, but the number on options that vest depends on the percentage increase in Rhine's sales over a 3-year service period. If by December 31, 2018, sales have increased by at least 10%, 50 options will vest for each executive, if sales have increased by at least 15%, all 70 options will vest. On the grant date, Rhine estimates that its sales will increase by 12% over the service period, and that its employee turnover rate over the 3-year service period will be 6%. It also determines that SHOW AE NOW (continued) les had increased by 16% for the the fair value of an option expected to vest is $13.40. At the end of 2018, actual sales had increased by 10K service period, and the actual turnover was 6 key executives for the service period. Required: 1. Prepare a schedule of Rhine's computations for its compensatory share option plan for 2016 through 2018 (round all computations to the nearest dollar). 2. Prepare the compensation expense journal entry for 2016