Melissa and Her Friend,Erica,go on a Hike to Get Away

Melissa and her friend,Erica,go on a hike to get away from the hustle bustle of city life.During the hike,Melissa takes several photographs with her cell phone camera and she uses a certain technology to transfer them to Erica.However,when she tries sending them to her friends who lives in the next city,she is unable to transfer the photographs.Which of the following technologies is Melissa using?

A) Wiki
B) WiFi
C) Bluetooth
D) NFC