Roger Is Working on a Project at Home

Roger is working on a project at home. However, his 4-year-old son seems to pester him the most when he is trying to solve a problem. Roger tries to ignore him, but usually gives in and stops what he is doing to pay attention to his son. Roger is actually

A) punishing his son by making him wait for attention.
B) increasing his son's behavior with partial reinforcement.
C) being a very attentive parent.
D) damaging his son's self-esteem.
E) having very little influence on his son's behavior.