The Order and Degree of the Differential Equation $\left( y - x y ^ { \prime } \right) ^ { 2 } = 4 \left( 1 + \left( y ^ { \prime } \right) ^ { 2 } \right)$

The order and degree of the differential equation $\left( y - x y ^ { \prime } \right) ^ { 2 } = 4 \left( 1 + \left( y ^ { \prime } \right) ^ { 2 } \right)$ are

A) 1;1
B) 1;2
C) 2;1
D) 2;2
E) 1;3