Which of the following is a true statement pertaining to the different type ofsmart cards and their characteristics?

A.
A contact smart card has its own power supply and communicates to a readerthrough an interface.

B.
A contactless smart card has an antenna and communicates to the reader throughradio waves.

C.
A contact smart card contains a combi chip, which supplies it with a powersupply.

D.
A contactless smart card and a contact smart card are the same, except thecontact smart card has its own power supply and the contactless card does not.

Explanation:
Two general categories of smart cards are the contact and the contactless types.When this card is fully inserted into a card reader, electrical fingers wipe againstthe card, in the exact position that the chip contacts are located. This will supplypower and data I/O to the chip for authentication purposes. The contactless smartcard has an antenna wire that surrounds the perimeter of the card. When this cardcomes within an electromagnetic field, the antenna within the card generates enoughenergy to power the internal chip. Neither card type has its own power supply.