What can we conclude from studies that have investigated the influence of anecdotal information

A)  People are not influenced by anecdotal information and tend to view it as non-representative and biased. 
B)  People tend to be influenced by anecdotal information, even when they are forewarned that the information is not representative. 
C)  People are influenced by anecdotal evidence only when they have not been forewarned that it may be misleading. 
D)  People are influenced by anecdotal evidence only when it is provided by someone they know and trust.