By reading this excerpt form <span><em>Not a Dove, But No Longer a Hawk</em>, specially where the speaker states "...</span><span><em>We are fighting now, I used to think, and some day we will triumph...", </em>we can conclude that the mindset described by the speaker in retrospective is not the same mindset they now have. The speaker starts a sentence to then offer clarification by saying "...<em> I used to think..."
</em>Therefore, your best answer is option B.<em> </em></span>
