$\text { Find the general solution of the differential equation } \frac { 1 } { x ^ { 2 } + y ^ { 2 } } ( x d y - 4 y d x ) = 0 \text {. }$

Multiple Choice

$\text { Find the general solution of the differential equation } \frac { 1 } { x ^ { 2 } + y ^ { 2 } } ( x d y - 4 y d x ) = 0 \text {. }$

A) $y ( x ) = \frac { C ^ { x } } { x ^ { 4 } + 1 }$
B) $y ( x ) = C \sqrt [ 4 ] { x }$
C) $y ( x ) = C x ^ { 4 }$
D) $y ( x ) = C \ln x$
E) $y ( x ) = \frac { C ^ { 4 } } { x ^ { 4 } }$