The police find most criminals (罪犯 ) because somebody tells

The police find most criminals (罪犯 ) because somebody tells them who the criminals are.They find other criminals by using science and their computers.When there is a bank robbery (抢劫)i the police first look through their computers for the names of bank robbers they know about.Then they go and talk to any of these robbers who are not in jail(监狱).They ask them where they were at the time of the robbery.If any of these people cannot give a good answer,the police will often use science to find out if one of them is the robber.
Many criminals leave something of themselves at the place of the crime like a fingerprint or a hair.Or they take something away on their shoes or clothes,like dirt or animal hair.If they leave behind some of their blood(血液) or a hair or a piece of skin,it will have their DNA inside it.
Everyone's DNA is different in the same way that their fingerprint are different.If a criminal cuts himself during a robbery or leaves a hair,or even a small piece of skin,scientists can find out what his DNA is.
1.Everyone's DNA is＿＿＿ in the same way that their finger prints are＿＿＿.
A,different,difference b.difference ,different c.different,different d.difference,difference