Editor
The fifth term in the expansion (x^{3}-\frac{1}{2x})^{6}$ is
Difficulty: Easy
A: 
$\frac{15}{16}x^{2}$
B: 
$\frac{2}{13}x^{3}$
C: 
$\frac{17}{7}x^{2}$
D: 
$\frac{16}{15}x^{3}$