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Lock options permitting executives to buy 260,000 shares of Pastner stock for $24 per hare. One-fourth of the options vest in each of the next four years beginning at December 31, 2018 (graded vesting). Pastner elects to eparate the total award into four groups (or tranches) according to the year in which they vest and measures the compensation cost or each vesting date as a separate award. The fair value of each tranche is estimated at January 1, 2018, as follows: Vesting Amount Fair Value Date Vesting per Option Dec. 31, 2018 25% $4. 60 Dec . 31, 2019 25% $5 . 20 Dec. 31, 2020 258 $5 . 40 Dec. 31, 2021 258 $6 . 40 Required: Determine the compensation expense related to the options to be recorded each year 2018-2021, assuming Pastner allocates the ompensation cost for each of the four groups (tranches) separately. . Determine the compensation expense related to the options to be recorded each year 2018-2021, assuming Pastner uses the traight-line method to allocate the total compensation cost. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Determine the compensation expense related to the options to be recorded each year 2018-2021, assuming Pastner allocates the compensation cost for each of