Transfer of images from SD card shield

Hey! I need to send jpeg images stored in the SD card which is in SD card shield mounted on Arduino UNO. The images were captured from grove serial camera. These need to be sent to the PC for further processing. Once processed an audio file is generated which is to come back to the UNO and must be played back.

The options to send the images are through: 1. Bluetooth 2. GPRS/GPS 3. Serial trasmission

Which is easy? And where can I find a suitable code for the same(transmission of images in SD card)??