Agamvir Singh, a scholar from India, arrived in the U.S. in 2022 on a J-1 immigration status. He had a one-year contract to teach accounting at the local university. His teaching was well received, and he was asked to stay and teach until the fall of 2025. If Agamvir stays to teach through 2025, which years' teaching income will be excludable?

	None
	2024 and 2025
	2025
	2020, 2023, 2024, and 2025