The lines tangent to the curves \[{{y}^{3}}-{{x}^{2}}y+5y-2x=0\]and \[{{x}^{4}}-{{x}^{3}}{{y}^{2}}+5x+2y=0\]at the origin intersect at an angles \[\theta \]equal to

• A. \[\frac{\pi }{6}\]            
• B. \[\frac{\pi }{4}\]
• C. \[\frac{\pi }{3}\]            
• D. \[\frac{\pi }{2}\]