The Solution of the Differential Equation $y ^ { \prime } = x y$

Multiple Choice

The solution of the differential equation $y ^ { \prime } = x y$ is

A) $y = c e ^ { x }$
B) $y = c e ^ { x ^ { 2 } }$
C) $y = c + e ^ { x }$
D) $y = c e ^ { x ^ { 2 } / 2 }$
E) $y = c + e ^ { x ^ { 2 } / 2 }$