A 700.0 mL solution is 0.209 M CH₂CH₂CH₂COOH (K₁-1.5 x 10%) and 0.253 M NaCH-CH₂CH₂COO. What is the pH after the addition of 5.00 mL of 0.750 M NaOH?

(A) 4.76
(B) 4.93
(C) 4.89
(D) 4.72