Suppose Alice has an RSA signature scheme, with the following values: N=55=pq,p=5,q=11, and x=27,y=3,xy=1mod40. Suppose Alice has signing key 27 . Suppose Alice sends Bob a message m=2 with her signature s=18 on it. What does Bob do to decide whether to accept this as a valid signature? (Marks may be deducted for incorrect answers.) Bob calculates 183mod55 and accepts the signature as valid if this value is 2. Bob calculates 227mod55 and accepts the signature as valid if this value is 18 . Bob calculates 1827mod55 and accepts the signature as valid if this value is 2 . Bob calculates 183mod40 and accepts the signature as valid if this value is 2 . Bob calculates 227mod40 and accepts the signature as valid if this value is 18