Number series
What is the missing number in the series: 125, 170, 135, .... , 145, ?
I. 140
II. 160
III. 115
IV. None of these
Question: 以下哪项是正确的？
Options:
A. 只有 II, B. 仅 I, C. 仅 III, D. 以上各项均不成立
Answer: A