Answer:
b. B antigens
Explanation:
Based on the information provided within the question it can be said that Antibodies against B antigens would be present in Jess' blood. This can be seen in the chart attached below. Blood Type A individuals tend to have Anti-B antibodies in their plasma, while Blood Type B individuals have Anti-A antibodies. Meanwhile individuals with Blood Type AB have none and individuals of Blood Type O have both.
