I would probably answer with B, because facial expressions would tell if the reader is pleased, annoyed, saddened, ect. by the content :)
C. more personal. Since he is sincerely introducing his son.
A. Is it pain you feel or is it guilt?
I think this happens because we focus on in too much that it stresses us out to be happy at the end. I think we can achieve more happiness in our lives by focusing on what we like to do most and not make happiness an end goal.
n e ways hi