2. Accounting for Stock Options

At the beginning of 2018, Dogbert, Inc. adopted a stock option plan for key employees. Under the plan, options are exercisable beginning five years after the grant date for a maximum of six years. On 1/1/18, Dogbert granted 115,000 options with an exercise (strike) price of $25 when the market price for Dogbert's $1 par value common shares was $25 per share. At that point in time, 100,000 options were expected to vest. Using the Black-Scholes Option Pricing Model, the fair value of each option was $5 as of 1/1/18. At the beginning of 2020, an unexpected number of executives departed, resulting in a decrease in the expected number of options to vest. The new estimate on 1/1/20 was 90,000 options. On 3/17/23, 60,000 options were exercised when the market price of Dogbert's stock was $30.

Required - Whatre the journal entries for 2018 - 2023 related to these stock options using the fair value approach, ignore taxes.