Which of the Following Statements Is True of the Effect

Which of the following statements is true of the effect of optimism on cognitive functioning?

A) Optimism alone influences cognitive functioning.
B) Pessimists are more likely to pay attention to both positive and negative stimuli equally.
C) Pessimists are more often inflexible,rigid,and likely to give up pursuing their goals.
D) Optimists are more likely to pay attention to only positive stimuli and to ignore negative stimuli.