Which of the following statements are correct regarding Radio Frequency Identification (RFID) technology?

A. RFID refers to a wireless system comprising two components: tags and readers.

B. The reader is a device that has one or more antennas that emit radio waves and receive signals back from the RFID tag.

C. Passive RFID tags are powered by the reader and do not have a battery.

Choose the correct answer from the options given below.