A chemist filled a buret with a NaOH solution of unknown concentration. They dissolved 0.251 g of solid KHP (MM: 204. 22 g/mol) in 25 mL of water and added 2 drops of phenolphthalein indicator. The chemist then titrated the KHP solution with the NaOH solution until a light pink color persists and found that it took 11.30 mL of NaOH solution to reach the endpoint. What is the concentration of NaOH (in M)?

A. 0.109

B. 0.0492

C. 22.2

D. 0.0339