A card reader is basically the same as a flash memory reader

If a class represents an amount of money (in US currency like $9.99), then the amount (like $9.99) could reasonably be stored in

a. A member variable of type double. b. Two member variables of type int. c. A string of characters (like "9.99"). d. None of the above.

A barcode is a(n) ____ code that represents data with bars of varying widths or heights.

A. read/write B. optical C. magnetic D. laser