When an entity uses fair value to measure the investment properties,

a. They should be revalued at each balance sheet date if there is a material different from fair value.

b. They could be revalued in any period based on management's judgment.

c. They should reflect the market conditions at the end of reporting period, so they should be revalued

at each balance sheet date.

d. They should be revalued at least once in every three years.