Which one of the following is not true concerning the treatment of investment properties under IAS 40?

A) Following initial recognition, investment property can be held at either cost or fair value.

B) If an investment property is held at fair value, this must be applied to all of the entity's investment property.

C) An investment property is initially measured at cost, including transaction costs.

D) A gain or loss arising from a change in the fair value of an investment property should be recognised in other comprehensive income.