This passage gave me a hard time, especially the function of paragraph 2 in the whole passage, is this "retained right" part of tangible theory or somehow used to support tangible theory?
Could anybody kindly answer me?
for Q 20 Inference
I hope that I could be corrected if my thoughts about it is wrong:
A total distorted and irrelevant, as according to my understanding, retained right is part of tangible theory
B "no valid theoretical basis" too extreme, even tangible theory can not cover it, there might be other theories
C the legal right to own the abstract idea is the thing tangible theory strive to avoid, so we can not say if they have or not have hat legal right under tangible theory
D yes
E assume copyright of evanescent things is mentioned in paragraph as one thing Tangible theory fail to cover, there's no comment on whether it is correct or common to assume its capability to be copyrighted