A box contains 5 black ties, 7 gold ties, and 8 pink ties. Stephen randomly chooses a tie from the box. Each tie is equally likely to be chosen. The probability that Stephen chooses a pink tie is equivalent to
Answer Choices
A. \frac{1}{4}
B. \frac{7}{20}
C. \frac{2}{5}
D. \frac{3}{5}
E. \frac{3}{4}