In the Law Relating to Identification Evidence, When Will a Judge

In the law relating to identification evidence, when will a judge direct an acquital to the jury? A judge must make a serious objective decision whether the identification evidence alone justifies leaving the case to the jury (R v Shervington 2008)

A) If evidence is based on a fleeting visit
B) If the witness saw the suspect for a long period of time
C) If there is no other supporting evidence
D) If the witness knows the suspect in question
E) All of the above