[SamuraiScot]

And another clear signal that Denmark [intends to hold onto Greenland] is terrified that most Greenlanders would rather be citizens of America than Denmark, would vote to join the US in a heartbeat, and would organize a "Greenlandic Underground" to resist Danish attempts to hold onto this nearly continent-sized island.

[Angelino97]

You left out the third option — Independent of Denmark and the U.S.