The correct answer is: A. Punched card
A punched card is a piece of stiff paper that can be used to store information by punching holes in it. The holes are arranged in a pattern that can be read by a machine. Punched cards were used in early computers and other machines to store and process data.
A card punch is a machine that punches holes in cards. It is used to create punched cards that can be used in computers and other machines.
A reader card is a machine that reads punched cards. It is used to read the information that is stored on punched cards.
Punched paper tape is a long piece of paper that has holes punched in it. The holes are arranged in a pattern that can be read by a machine. Punched paper tape was used in early computers and other machines to store and process data.
None of the above is not the correct answer.