$\text { Use the differential equation } \frac { d y } { d x } = \frac { 2 x } { y } \text { and its slope field to find the slope at the }$

$\text { Use the differential equation } \frac { d y } { d x } = \frac { 2 x } { y } \text { and its slope field to find the slope at the }$ $\text { point } ( 4,8 )$

A) 32
B) 1
C) 8
D) 64
E) 16