Could this be explained step by step showing all working out. So it's easy to understand.

{:3} Alice and Bob has designed a public key cryptosystem based on the ElGamal. Bob has chosen the prime p = 113 and the primitive root o. 2 I3. Bob's private key is an integer tr = '71] such that 33 E ob E 18 [mod p]. Bob publishes the triple {a a: .3}- {a} Alice chooses a secret number F: : 3D to send the message 2022 to Bob. 'What pair or pairs does Bob receive? {b} 1'v'y'hat should Bob do to decrypt the pair or pairs he received from Alice? During the computation, make sure Bob does not compute any inverses. {c} Verify the answer of Parts {a} and {b} in sagemath. {d} Before choosing k. = 30, Alice was thinking of choosing k = 32. Do you think that Alice should have chosen F: = 32'? lCliye an answer and justify it. IU+T+[3+2]+3=25 marks