Answer: d. record compensation expense of $600,000 in 2019 and $300,000 in 2020.
Step-by-step explanation:
In 2019, with 2 years left on the on the incentive, the Iona Bell's estimate has changed from not believing that the target could be reached to believing that it could.
This will move their estimate for Compensation from 0 in 2018 to (300,000 * $3) $900,000 at the end of 2020.
They will have to account for it across the 2 remaining years.
In 2019, with 2 years out of 3 elapsed, they will apportion it in this manner ,
= 900,000 * 2/3 - $0 (previous year's estimate)
= 600,000 - 0
= $600,000
In 2020 with the third year elapsed, they will apportion it as such,
= 900,000 * 3/3 - $600,000 (previous year's estimate)
= $300,000
The correct option is therefore Option D.