How do you complete this sentence using possessive adjectives Adel and Hanae live with blank parents?

Adel and Hanae live with their parents.

• The plural pronoun 'their' may be the expected possessive adjective, assuming that Adel and Hanae are siblings. But, they may not be siblings. Alternate possessive adjectives can be:
• Adel and Hanae live with her parents.
• Adel and Hanae live with his parents.
• Adel and Hanae live with my parents.