Right option is (b) Each character is stored in binary code in the smallest unit of memory, called a byte
Explanation: Each byte comprises 8 bits, with each bit having a possible value of 0 or 1, producing 255 possible combinations. Some ASCII values are defined as keyboard characters, others as special control characters, such as signaling the end of a line (a line feed and a carriage return), or the end of a file full of text (end-of-file character). A file with only ASCII characters is called an ASCII file.