Under IFRS 2, Share-based Payments, when there is a modification or cancellation of a share-based payment, an entity should recognize a compensation expense over the vesting period, reflecting the fair value of the grant at each reporting date. If the share options granted by Tucan to its executives in 2016 did not become exercisable in 2018 due to the decline in earnings per share, the expense recognized in 2018 would reflect the portion of the total grant that has vested during that year. Since the options have not become exercisable, the full expense related to those options would be recognized in the year they vest or expire, which in this case seems to be 2018.
Given the information provided in the question, it's not clear what the actual expense was in previous years. However, if no expense was recognized in prior years because of the vesting conditions not being met until 2018, the full expense of the share-based payment would be recognized in 2018. Therefore, assuming the options were granted in 2016 and the vesting conditions were not met until 2018, the entire expense would be recognized in the accounts for 2018. The correct answer, based on the information given, would be the expense for 2018, which is (1,250,000) and a cumulative expense of 1,300,000.
So, the expense that will be shown in the accounts for 2018 is (1,250,000) and the cumulative expense would be 1,300,000.