If desk='chair', chair='blackboard', blackboard='duster', duster='chalk', where do you sit?
I. Blackboard
II. Chair
III. Desk
IV. Duster

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