Most of the candidates that answered this question muddle up the story.  They combined the Jewish and Roman trials together and this made majority of them score low scores as essential points were not mentioned i.e. (i) The governor asked if Jesus was the king of the Jews (ii) Jesus did not respond to all the allegations of the priest and elders (iii) Pilate asked whom they wanted released to them, Jesus or Barabbas? (iv) They unanimously demanded for the release of Barabbas and that Jesus be crucified.       

The (b) part of the question was their undoing as only few gave the correct answers.  The points they would have mentioned are: (i) Pilate knew Jesus was truly innocent of the charges (ii) He was pleasing the people to keep his job/position (iii) Pilate presented himself as a weak leader.