Molly's divorce from her husband, Mike, became final on December 30, 2023. Their children lived with Mike for the first four months of 2023 but moved in with their mother after Mike was declared legally blind. Mike did not contribute anything to the cost of maintaining the household when the children were living with his ex-wife. Mike is 45 years old. What filing status can Mike use during 2023 and what is his standard deduction?