Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

Under-diversifiedportfolios are not a potential implication of which of the followingbehavioral biases?
Option A:Representativeness.
Option B:Illusion of control.
Option C:Confirmation

Answer: A