The Differential Equation $y ^ { \prime \prime \prime } + 2 y ^ { \prime \prime } + 3 y ^ { \prime } + 7 y = 0$

Multiple Choice

The differential equation $y ^ { \prime \prime \prime } + 2 y ^ { \prime \prime } + 3 y ^ { \prime } + 7 y = 0$ is

A) first order linear
B) second order linear
C) third order linear
D) first order nonlinear
E) second order nonlinear