In Amir's mind, he was forced to choose between two people. Who are they?

Earlier in the story, Amir also feels that he has to
choose between his father, Baba, and his servant/friend, Hassan. Amir's jealousy of his
father's affection toward Hassan led him to sabotage the family unity by planting a
watch and money under Hassan's mattress. Expecting Hassan to be punished for stealing,
Amir assumes that Baba will expel him from the household, leaving him alone as the
receiver of his father's love. However, his plan backfires somewhat when Baba forgives
Hassan instead. Ali and Hassan leave the house in disgrace, but Amir comes to realize
that his deed did nothing but leave him with a lifetime of
guilt.