Thereafter, in 1831, 1909, 1976, and 1998, and in numerous private copyright bills and temporary extensions of the copyright law and in repeated patent law revisions, Congress extended the terms of Federal copyright and patent protection of subsisting works.

Choose your answer: based on the paragraph above can we conclude that "Congress extended the terms of Federal copyright and patent protection of subsisting works in 1830.
"?

Available options: (a). Yes (b). It's impossible to say (c). No
I think the answer is
(c).