Who is most likely to be deceived by type O blood?

Who is most likely to be deceived by type O blood ?

Reasons for being cheated of blood type O:

Deceived by a friend. People with blood type O are generally more vigilant, and have a certain degree of alertness to strangers or unfamiliar people. But they will have a completely opposite attitude towards people they are familiar with, especially for those who are already regarded as friends, they are easy to be deceived because of their credulity. ( Blood type and personality http:///xx/)

Deceived index: 60%