The Government has argued as if petitioners had advanced a general theory of the Copyright Clause, or a general constraint under which Congress must operate. That is a mistake. This case is about limits to an enumerated power. It's not about general power of Congress to exercise its copyright authority.
Does this next sentence follow, given the preceding text?
Copyright Clause contains a z

OPT:
a). Yes.
b). It's impossible to say.
c). No.
c).