Answer: There is no revised estimate the option is still open to be exercise as agreed.
2. A report will be included in the 2019 financial report of the existence of the option.
Explanation:
The conditions attached to the option is the increase in revenue by 2% in five years and since we are in the first year no revision can be made to the option.
The existence of the option has to be mentioned in 2019 Financial report has a way of accounting for it's existence.