Man proposes using GPS

A man, surnamed Zhang, proposed by spelling out "Marry Me" on the map. The 30-year-old Shanghainese made the sudden decision to quit his job and take his girlfriend on a road trip last year. When they completed their journey in March, Zhang presented the map of their journey with their route plotted out by a GPS tracker, and it spelled out "Marry Me". He had planned the entire route beforehand in order to surprise his girlfriend at the end. His romantic gesture, in the form of a 23,007-kilometer journey across southern China, was certainly enough to win the girl over, and she accepted his proposal.

How did the man propose to his girl?

A. He knelt down and said "marry me"

B. He showed her a GPS tracker which showed "marry me"

C. He showed her a map which showed "marry me"

（中國日報網英語點津 Helen 編輯）