A person with type B blood would have high levels of the A antibodies even if they've never been exposed to a different type A blood.

Name: A person with type B blood would have high levels of the A antibodies even if they've never been exposed to a different type A blood.
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Quizplus · Accepted Answer

This is true. People with type B blood naturally have antibodies against type A blood, regardless of whether or not they have been exposed to it. This is why type B blood is incompatible with type A blood for transfusions.

A Person with Type B Blood Would Have High Levels