Consider this equation:

2NaOH(aq) + H₂SO₄(aq)→ Na₂SO₄(aq) + 2H₂O

In a titration experiment, you find that 6.5 ml of NaOH is needed to neutralize 0.12 g H₂SO₄. What is the concentration of the NaOH solution?

a. 0.78 m
b. 0.22 m
c. 15 m
d. 0.44 m