Here are some words translated from an artificial language: astaose means stuffed chair, estaose means leather chair, costafut means liftoff
Which word could mean chair lift?
I. futcosta
II. oseesta
III. futose
IV. osecosta

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