Answer:
The correct choice is B.
Step-by-step explanation:
The girls obtained the lunatic's home phone number from a telephone directory by calling all the numbers (total of 6) that were listed under the name Bickles. They called each until they got the right one.
Next, they made up a story of how they had met the lunatic at the library, borrowed a book from him and lost it and so obtained the lunatics' school address from his father as well as his name.
His name was Mike Bickle. His address was a freshman dormitory (Room 209).
Cheers!