Trisha has a negative attitude toward smoking, but she continues to smoke two packs of cigarettes a day. According to the theory of planned behavior, one reason that her attitude and behavior are inconsistent could be that her 

A. belief that she can control her smoking behavior is weak. 

B. family and friends also have negative attitudes toward smoking. 

C. attitude is based on feelings rather than beliefs. 

D. attitude is usually accessible when she reaches for a cigarette.