Which of the following can best replace the word "well-worn" in the first sentence of Paragraph 9

A．High-tech life may be risky.
B．It's difficult to make friends in the modern world.
C．Juvenile crime is rising in Japan.
D．More electronic pets are turned out.

A．the robber killed the two women by giving them overdose of sleeping pills
B．the victims trusted the telephone dating service would find them a partner
C．the man succeeded in robbing two women, but failed in his third attempt
D．the robber and the victims encountered because they used the Lovegetty