The Question of How Best to Protect People Against Unjust

 The question of how best to protect people against unjust searches without unduly hindering criminal investigations is settled in most democratic countries by 

A)  excluding improperly gathered evidence from trial regardless of how relevant it is. 
B)  assuming that protecting people from unjust searches is more important than any hindrance that criminal investigations may have to endure. 
C)  defining "unjust" in such a strict manner that no police search could ever reasonably be considered unjust. 
D)  allowing all relevant evidence at trial regardless of how it was obtained, then doling out punishment after the trial if the evidence was obtained improperly. 
E)  None of these are correct.