What Argument Was Put Forward in Case 106/77 Simmenthal as to Why

Multiple Choice

What argument was put forward in Case 106/77 Simmenthal as to why the Italian statute could not be set aside in favour of EU law by the referring court?

A) Only the Italian Constitutional Court could set aside the statute.
B) Only the Prime Minister of Italy could set aside the statute.
C) Only the Italian Parliament could set aside the statute.