Which statement is the best description of a Caesar cipher?
OA. A message is written in plaintext, then each character is shifted a
specific number of spots down the alphabet.
B. Multiple disks containing the letters of the alphabet are
assembled and rotated to display a message code.
C. Each letter of an encryption key determines the position and shift
of the letter situated above it.
D. Drums in a row of batteries rotate in a synchronized motion until a
stop indicating a letter is detected.