(Choose 2 answers)
A. E
B. V
F
C. Y
D. F
E. G
F. R
Vigenère cipher is used with a key "XO" to encrypt a long English book. You order the letters appearing in the encrypted book in the decreasing order of frequency (i.e., from the most frequently appearing to the least frequently appearing), and the result is: VFDMJHFIAOIRGWLSQXETSKHJZP. Which ciphertext letters correspond to the plaintext letter E (which is the most frequent letter in the plaintext)?
Exi Q: 24
