Select each term which correctly describes the differential equa

$x^2\frac{dy}{dx}\frac{1}{x}y=3e^x$

nonlinear $($ODEs only$)$

PDE

separable $($ODEs only$)$

not separable $($ODEs only$)$

second$-$order

ODE

linear $($ODEs only$)$

first$-$order