For the Hill cipher with m = 2 and key K = [[7 2] [5 3]] (first row is [7 2], second row is [5 3]),

(a) Show the result of encrypting ITSLIKEDEJAVUALLOVERAGAIN

(b) Find the inverse key for this value of K, and use it to decrypt the following ciphertext. WHYGWSSUFHGXFVTAEKXEMWXHVZPHJFGXFVHVOQOZFVEEUFPJGXQMIAZJ

(c) How many pairs of cipher text and plaintext should be available to break the Hills Cipher? Please explain your reason and describe a way to achieve this attack