12. Suppose you are doing framing with flag bytes and STX, ETX are two of the framing flags. Also assume DLE is the escape character. Destuff the string where we assume the entire string is the data of a frame that is sent. Perhaps the string is not legal. If so, give the correct characters and point out the error the exact error. DLE DLE DLE ETX A B DLE ETX DLE ETX 6 2 DLE STX X DLE ETX DLE DLE STX In the answer use Gray / strikethrough indicates an escape character that is actually serving the purpose of escaping the following character. Bold represents that character that is valid in the data because it was escaped by the preceding DLE character Red indicates an invalid, unescaped character in the body of the frame