Louis bought an older home to serve as his primary residence and has been fixing it up since 2017. In 2017, he replaced the windows and claimed a nonbusiness energy property credit of $200. In 2018, he replaced the front door at a cost of $2,000 when the credit was not available. In 2020, he installed an advanced main air circulating fan to his natural gas furnace at a cost of $1,850. What should Louis do to claim his energy credits? Amend the 2018 return to claim a $200 credit for the door. On his 2020 return, claim a credit of $185 for the fan. Amend the 2018 return to claim a $200 credit for the door. On the 2020 return, claim a credit of $50 for the fan. Include the door and the fan on his 2020 tax return for an energy credit of $385. The nonbusiness energy property credit expired at the end of 2017. There is nothing for Louis to claim.