In the model described by the equation

y$=$$0+$$1$x$+$ey $=\backslash$beta$\_0+\backslash$beta$\_1$x $+$ ey$=$$0+$$1$x$+$e

The slope coefficient can be interpreted as $\_\_\_\_\_\_\_.$

A$.$ A percent change in yyy in response to one percent change in xxx$.$

B$.$ A change in yyy in response to one percent change in xxx$.$

C$.$ A percent change in yyy in response to one unit change in xxx$.$

D$.$ A change in yyy in response to one unit change in xxx$.$

E$.$ A change in yyy in response to $100$ unit change in xxx$.$