@LinaJ2020
Thanks for your answer. Though the answer is for 2020, I think it is the same for 2021 as well.
And I have a further question, though I anticipate I'll be staying in the US for at least 183 days in 2022 this year, I can file taxes as a non-resident for the whole 2021 tax year. Am I right?
I am just wondering what the benefits or drawbacks are for the two options since dual status is more complicated and maybe an extension is required.
