On which interval is f$($x$)=3$x$520$x$3$f$($x$)=3$x$520$x$3$increasing$?$

Select one:

a$.$

$(0,$$)(0,$$)$

b$.$

$($$,2)($$,2)$ and $(0,2)(0,2)$

c$.$

$(2,2)(2,2)$

d$.$

$($$,2)($$,2)$ and $(2,$$)$