Hi, the author thinks that software is not patentable. They identify that if something is akin to an axiom, then it is not patentable, and the author deploys this argument for why they should not be patented in the second half of the second paragraph.
B is wrong because we do not have direct textual support for it. In fact, the author likely disagrees with it, since they do not consider algorithms to be inventions, but rather more like discoveries.