Which of the Following Statements Is an Example of Optimistic $\$ 1$

Which of the following statements is an example of optimistic overconfidence?

A) When a fair coin is flipped, I win $\$ 1$ if heads comes up and $\$ 0$ if tails comes up. I believe that there is a $75 \%$ chance that tails will come up.
B) I give $90 \%$ confidence intervals for 10 questions. Of the 10 questions, the true value for 7 questions falls within the stated intervals.
C) When a fair coin is flipped, I win $\$ 1$ if heads comes up and $\$ 0$ if tails comes up. I believe that there is a $75 \%$ chance that heads will come up.
D) I give $90 \%$ confidence intervals for 10 questions. Of the 10 questions, the true value for 10 questions falls within the stated intervals.