单项选择题Which of the following can best summarize the main idea of the passage?A.With no Retriever, thousands of laptops are stolen every year.B.A new software provides a means to reduce laptop theft.C.Retriever has helped to find thieves and lost computers.D.A new program offers a communication platform. with the thieF.
A.B.
B.
C.
C.
D.
D.