IAS 36 Impairment of Assets suggests how indications of impairment might be recognised. Which of the following would be EXTERNAL INDICATORS that one or more of an entity's assets may be impaired?
A、An unusually significant fall in the market value of one or more assets
B、Evidence of obsolescence of one or more assets
C、A decline in the economic performance of one or more assets
D、An increase in market interest rates used to calculate value in use of the assets