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Question 6
The Vigenère decryption algorithm used in this lesson has limitations.

In which of the following scenarios could the program return incorrect results? (Select all that are correct.)

1 point

The language of the original message has multiple letters of comparable high frequency.


The language of the original message has an unusual letter that is highest in frequency (not 'e' or 'a').


The language of the original message has many characters not in the English alphabet.


The language of the original message when written in sentences has different letter frequencies than the sum of individual words in the dictionary.


The language of the original message is not included in the dictionaries.