Can you solve this? Riddle confuses Internet users

This riddle will leave you puzzled for hours.

The odd question has been trending on social media because many just could not find the correct answer. 

Uploaded on Allicattt's Facebook page, the question asked, "If Teresa's daughter was my daughter's mother, what am I to Teresa?"

The five options for answers are: Granddaughter, mother, daughter, granddaughter and Teresa.

However, many disagree with the options and say the answer should be son-in-law or daughter-in-law. 

The others are left divided but many are leaning towards Teresa. 

What do you think is the answer to this riddle?