Madam Helga claims to be psychic.  A national TV talk personality plans to test her in a live TV broadcast.  The process will entail asking Madam Helga a series of 20 independent questions with Yes/No answers.  The questions would be of the nature that she could not have any way of knowing the answer from prior knowledge.  She will be considered psychic if she correctly answers more than a specified number (called the cut-off) of the questions.  The cut-off must be above the expected number of correct answers. What would be the expected number if she was not psychic?  

a.  12.

b.  14.

c.  10.

d.  Can’t be determined without more information.