please give me the right answer

(1 point) Consider the hex strings A=0b2f9f288b35d8207 and B=0xfd22188abd63f96f. a) What is AB in hexadecimal? Please give your answer a leading 0x and use lowercase letters only. hexadecimal: b) Suppose that A was generated uniformly at random from all 8 byte strings. What is the probability that the second binary digit of A is 1 ? c) Suppose that A was generated uniformby at random from all 8 byte strings. What is the probability that the second binary digit of AB is 1? Note: You can earn partial credit on this problem. (1 point) A cryptography student has accidentally used the same keystream to encrypt two different messages, M1 and M2. We know that the ciphertexts are C1=0256c9b03c5811d16 and C2=0038dcla61ac67e2e. We also happen to know that M1=0x9fc53alca3141a4e. a) What is M2 in hexadecimal? Please give your answer a leading 0x and use lowercase letters only. b) What is the keystream? Please give your answer a leading 0x and use lowercase letters only. Hint: These are all 8 byte numbers and wilf fit in an unsigned long type on most systems