The Controversy Regarding Affect (Emotion) Concerns Whether or Not Positive

The controversy regarding affect (emotion) concerns whether or not positive and negative affect

A) are two ends of a single dimension or two independent dimensions of emotional experience.
B) measures are valid and reliable or contaminated by self-report biases.
C) are adequate representations of people's complex emotional experiences.
D) are both necessary to define happiness or if positive affect is sufficient.