Isabel (a citizen of Peru who is in the U.S. on a B1 visa) and her husband William (a U.S. citizen), have lived continuously in Alexandria, Virginia, since moving to the U.S. on October 15, 2016. In August 2017, she separated from him and moved into her own apartment. For 2017, Isabel is a U.S. resident because:

A Her husband is a U.S. citizen.

B She intends to live in Alexandria for the next 183 days.

C She has applied for a green card.

D She lived in the U.S. for more than 183 days in 2017 and meets the substantial presence test.