67 of 100. H&R Block Mary lived with her five-year-old daughter, Amy, and her best friend, Sarah, for all of 2021. Sarah lost her job in late 2020 and Mary agreed to let her move into her home until she is able to find employment. Mary's 2021 AG) was $110,000. Sarah did not earn any money in 2021, and Mary paid 100% of the household support. How much, if any, will Mary benefit from the combination of the Child Tax Credit and the Other Dependent Credit in 2021? $0 $500 $2,000 $4,100