Codes consisting of bars or lines of varying widths or lengths that are computer-readable are known as-

[ A ]    an ASCII code
[ B ]    None of these
[ C ]    a bar code right
[ D ]    an OCR scanner
[ E ]    a magnetic tape
Answer : Option C
Explanation :
Bar code is a series of parallel vertical lines (bards and space) that can be read by bar code scanners. It is used world wide as part of product packages, as price tags, carton labels, on invoices even in credit card bills. It facilitates unique product identifications through using international symboligies/ numbering systems promotes brand image and would enabletimely and accurate capture of product information.