In 2020, mowchan inc. acquired sanchez co. and recorded goodwill of $290 million as a result. the net assets (including goodwill) from mowchan’s acquisition of sanchez co. had a 2021 year-end book value of $1,160 million. mowchan assessed the fair value of sanchez at this date to be $1,020 million, while the fair value of all of sanchez’s identifiable tangible and intangible assets (excluding goodwill) was $900 million. the amount of the impairment loss that mowchan would record for goodwill at the end of 2021 is