When Will the Courts Flout the Clear Will of Parliament

Multiple Choice

When will the courts flout the clear will of Parliament? See the House of Lord's decision in Sheldrake v Dpp, A-G Ref's (No 4 of 2002)

A) If they do not agree with the legislation
B) If they decide a reverse burden should not be imposed
C) If the burden unjustifiably infringed S6(2) ECHR.
D) If the courts want to override Parliaments intention