M：Ms.Dawson，what were you doing when the man with the mask took his gun out？ W：Oh，it was so terrible.I was just talking with the bank clerk when he pointed the gun to me and told me to lie down on my face. Q：What are they talking about？（）
A．A case of bank robbery. B．The search for the reliable witness C．The interview with the bank clerk. D．The terrific detective story.