Sumrall Corporation owns machinery that was purchased 20 years ago. The​ machinery, which originally cost​ $2,000,000, has been depreciated using the​ straight-line method using a​ 40-year useful life and no salvage value and has a current carrying amount of​ $1,000,000 and a current fair value of​ $800,000. Sumrall estimates that the machinery has a remaining useful life of 20 years and will provide net cash inflow of​ $45,000 per year. Sumrall should record an impairment loss associated with the machinery​ of:
a) $0
b) $200,000
c) $180,000
d) $220,000