Lynch Printing Company determines that a printing press used in its operations has suffered a permanent impairment in value because of technological changes. An entry to record the impairment should

a. recognize an extraordinary loss for the period.

b. include a credit to the equipment accumulated depreciation account.

c. include a credit to the equipment account.

d. not be made if the equipment is still being used.

The answer is b, but i think is c and the journal entry should be

dr Accumulated Depreciation dr Impairment loss cr PPE

Can you explain why the answer is b and what i did wrong? Thank You