Instruction: answer the question based on the following text.
Why people are so obsessed with hygge, the cozy Danish lifestyle movement


Adapted from: https://www.cnbc.com/2019/11/23/what-is-hygge-and-why-are-people-so-obsessed-with-it.html
I. But why are people so obsessed about it? II. But why are people obsessed by it? III. But why people obsess over it?
Which ones are correct?