Which of the Following Statements Regarding Positive Emotions Is True

Which of the following statements regarding positive emotions is true?

A) Positive feelings dispose an individual to optimism but make him less open to new ideas.
B) Individuals feeling positive emotions are more realistic in their evaluation of the environment.
C) Positive emotions are associated with less creativity,but higher productivity.
D) Having positive emotions can lead to upward positive spirals of good emotions.