A titration of 25.0 mL of formic acid (HCOOH, KA=1.77×10−4) requires 36.0 mL of 0.100 M NaOH to reach equivalence. What is the pH at this point? a. 2.49 b. 5.73 c. 11.51 d. 8.26

The answer is d but I'd just like to have it explained because I'm a little confused. Thanks!