Reading Comprehension (RC) | Re: Because the framers of the United States Constitution (written in 1787

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Can you please explain the approach to solveQ3

Thanks

(Book Question: 531)
It can be inferred from the passage that the frequency with which pre-1830 cases have been cited in court decisions is an indication that
A.judicial support for patent rights was strongest in the period before 1830
B.judicial support for patent rights did not increase after 1830
C.courts have returned to judicial standards that prevailed before 1830
D.verdicts favoring patentees in patent-infringement suits did not increase after 1830
E.judicial bias against patentees persisted after1830

If early judicial
decisions were prejudiced against patentees, one
might expect that subsequent courts—allegedly
more supportive of patent rights—would reject
the former legalprecedents.