Logic questions

A can’t guess: It’s not 2 4 9 J K, it can only be 3, A, 5, 7, Q

B knows that A can’t guess: B is spades or diamonds There is no one of 2 4 9 J K in these 2 suits, so B knows that A draws spades or diamonds and cannot guess any of them

Now it can be determined that the possible cards are Either a spade or a diamond

A said he can guess it now: A knows that B’s card is a spade or a diamond, so he can guess it, so A’s own card must not be an A, it may be a 5 7 Q

B said that I also guessed it: it means that B is a diamond, so if A is not A, it can only be 5. B guessed that A’s card is a diamond 5