Pointing to a man, a woman said, 'His mother is the only daughter of my mother.'
How is the woman related to the man?
I. Mother
II. Grandmother
III. Sister
IV. Daughter
Question: 以下哪项是正确的？
Options:
A. 仅 II, B. IV 或 II, C. 只有 I, D. II 或 III, E. 仅 III
Answer: C