Can a single Dad claim the EIC of his child

The child is 18 and lived with his dad for 8 months. He started to live by himself and earn the money from Aug 2019.  The boy finished his own tax return WITHOUT claim he is his dad's dependent.  and he did not want to amended it. The boy's income is less than $10K.

 

The dad prepared tax return in turbotax, and he choose did not support the boy more than 6 months. so the boy will not be the dad's dependent. The dad's tax return status is single.  But the trubotax said the boy could still be qualifying child for the Dad's Earned Income Credit.  Could anyone help confirm if it is allowed?  It will be about $2000 for the Earned Income credit with the qualifying child. 

 

My friend checked the irs website,looks it could meet all test.  But he still feel not sure about it . Thank you for your help.