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If $y = \frac{x}{{\ln \,|c\,x|}}$ (where $c$ is an arbitrary constant) is the general solution of the differential equation $\frac{{dy}}{{dx}} =  \frac{y}{x}+  \phi \left( {\frac{x}{y}} \right)$ then the function $\phi \left( {\frac{x}{y}} \right)$ is :

• A
  $\frac{{{x^2}}}{{{y^2}}}$
• B
  $- \frac{{{x^2}}}{{{y^2}}}$
• C
  $\frac{{{y^2}}}{{{x^2}}}$
• ✓
  $ - \frac{{{y^2}}}{{{x^2}}}$