The little boy visited me a lot . After the mother died of a heart attack and the little boy went to live with older siblings , a young woman named Amy lived in that apartment . On the first floor lived an older African - American couple . For security there was a deadbolt on the front door to the building .

Q with options: Give answer the following question using evidence from the above passage: What may be the reason for the dead bolt ?
Pick your answer from:
A). There have been multiple murders in the area .;
B). They live in an unsafe neighborhood .;
C). Their residents are paranoid .;
D). They live in a safe neighborhood .;
B).