DUSCOD LUDOU UNU Question 8 of 35. Demarcus is a sole proprietor who had a nonfarm net operating loss in 2020. Which of the following is NOT an option for his loss? Demarcus may waive the carryback by attaching a statement to his timely-filed 2020 return He may carry the loss back to his 2015 return using Form 1040-X He may carry the loss back to his 2015 return using Form 1045. He may carry the loss back to his 2015 return using Form 1139 Mark for follow up