Please help :( On January 1, 2021, the general manager of Chicken Nuggets Company has been granted a share appreciation right of 30,000 shares. Exercise date is January 1, 2024.

After a 3 year service period, the employee is entitled to receive cash equal to the appreciation entitled to receive cash equal to the appreciation in share price over the market value on January 1, 2021.

Market value of Chicken Nuggets share are:

January 1, 2021 P50

December 31, 2021 P40

December 31, 2022 P30

December 31, 2023 P60

How much is the compensation expense related to the share appreciation right given to the manager during 2021?