Alroistiol

From what I understand, you believe in altruistic actions.
My question is:
A. What does science say on the subject, and is there documentation for such an action?
B. Morality is inherent in us. A moral action is done out of the feeling that it should be done this way. If a person goes against his intuition, he may be confused and feel regret and confusion, bad feelings. So when a person goes with his thinking, he actually feels good about it and actually has a hedonistic side to it.
Don’t we come to the conclusion that the act cannot be motivated solely by values?