Introducing a boy, a girl said, 'He is the son of the daughter of the father of my uncle.'
How is the boy related to the girl?
I. Brother
II. Nephew
III. Uncle
IV. Son-in-law

Question: 以下哪项是正确的？
Options:
A. III 或 II, B. IV 或 II, C. 以上各项均不成立, D. 只有 I, E. I 或 II
Answer: D
E
True statement: I