At December $31,2025,$ events and circumstances suggest Whytnal Corporation may not recover the carrying amount of a piece of equipment. The company uses straight$-$line depreciation for its fixed assets. The following is information relating to this equipment:

Original cost, July $1,2020,$ $$1,000,000$

Useful life, $10$ years

Salvage value, $$100,000$

Expected future net cash flows, $$500,000$

Fair value, $$400,000$

Estimated disposal costs, $$50,000$

a$.$ What amount of impairment loss should the company recognize at December $31,2025,$ assuming the company intends to continue using the equipment in the future?

b$.$ Assuming a $($continuing to use the equipment for the remainder of the useful life$),$ what is the revised annual depreciation amount for the equipment beginning January $1,2026?$

c$.$ Assume instead the company intends to dispose of the equipment as soon as possible. What is the book value the company should report for the equipment at December $31,2025?$

d$.$ Assuming c $($dispose of the equipment as soon as possible$),$ in which asset section of the balance sheet should the company report the equipment at December $31,2025?($current asset, long$-$term investment, or PPE$)$