Extra credit discrete math

Plz do both parts. Will leave a thumbs up. Qs 5. Part 1

Part 2(extra credit).

Exercise S This exercise relate to the inhabitants of the island of knights and knaves created by Smullyan, where knights always tell the truth and knaves always lie. You encounter two people, A and B. Determine, if possible, what A and B are if they address you in the way described. If you cannot determine what these two people are, can you draw any conclusions? A says "The two of us are both knaves", and B says "A is a knave