Can I claim my daughter as depentent in year 2020

Hello,

 

I had been divorced for many years. My ex-wife was file tax return with my daughter before. My daughter turned into 18 and went to college in year 2020. I paid her college fee for about 12K since June 2020. I am wondering if I can claim my daughter as dependent too? or only one parent can do this.

 

Please advise?

 

Thank you