This year Natalie transferred $500,000 of bonds to a revocable trust with directions to the trustee to pay income to her aunt for five years, after which the corpus is to be distributed to Natalie's niece. At year-end, the trustee paid $14,000 of income to the aunt. Which of the following is a true statement?
A. Natalie has made a taxable gift of $1,000.
B. Natalie has made a completed gift of $500,000.
C. Natalie has made a taxable gift of $474,000.
D. Natalie has not made a completed gift because the trust is revocable.