Jason Had Promised to Help His Elderly Next Door Neighbor

Jason had promised to help his elderly next door neighbor move some heavy furniture next Friday. When Friday came, Jason really wanted to go with his friends to the beach, but he did promise the neighbor. He decides to help the neighbor because the "old guy" always had been nice to him and deserves his help and, besides, he tells great stories. Jason's attempt to convince himself that he was doing the "right thing" by helping his neighbor was most likely caused by

A) the actor-observer bias.
B) his tendency to use self-handicapping.
C) the cognitive dissonance he felt.
D) individuating information about his neighbor.