Task $5(5$ pts$)$: Extra credit task$/$Bonus task: A Cryptanalysis Model

One may argue that if the plaintext does not repeat, using the same IV is safe. Let us look at the

Output Feedback $($OFB$)$ mode. Assume that the attacker gets hold of a plaintext $($P$1)$ and a

ciphertext $($C$1),$ can he$/$she decrypt other encrypted messages if the IV is always the same? You

are given the following information, try to figure out the actual content of P$2$ based on C$2,$ P$1,$

and C$1.$

I am trying to do the steps to work it out to get the answer and need help.