A provides B with professional advice during a casual conversation, and B later uses that advice successfully. Can A request payment for their advice?
Yes, A can request payment because professional advise should always be compensated for.
No, A cannot request payment because the advice was given during a casual conversation.
Maybe, it depends on wheather A and B had an agreement beforehand
Yes, but only if B offers to pay voluntarily as a token of appreciation.
Wheather A can request payment for their advice depends on whether there was a prior agreement or understanding between A and B regarding compensation.Hence option C is the correct option