Question: A tax-exempt organization must file an annual information return (e.g., Form 990, Return of Organizations Exempt from Income Tax) A. Only if it has gross income of $1,000 or more used in computing UBTI. B. If it is a private foundation even though it has no UBTI. C. Unless all of its income is used for its tax-exempt purpose and none of it is UBTI. D. Unless all of its income is used for its tax-exempt purpose.