11.58 mL of 0.0500 M HCl is titrated to the equivalence point with 15.05 mL of a NaOH solution. What is the concentration (in M) of the NaOH solution that was added?
A. 0.0345 M
B. 0.0385 M
C. 0.0415 M
D. 0.0455 M