PhonesForUs Has a Stock of Old Smart Phones Bought Three

PhonesForUs has a stock of old smart phones bought three years ago from a supplier. The phones have been counted up and it has been found that there are 100 of them. These phones originally cost £50 each three years ago. However, no one has bought one of these phones in the past 18 months and much newer models with much greater levels of features and connectivity have rendered these phones out of date. The accountant has decided that the phones can no longer be recognised as an asset in the statement of financial position of PhonesForUs. What is the reason for the accountant's decision?

A) The cost of the phones cannot be measured in such a way that a faithful representation is achieved.
B) There is no potential to produce economic benefits for the entity.
C) There is no past event giving rise to the asset.
D) The smart phones are not controlled by PhonesForUs