Yes if the RD deadline is after the ED and EA notifications, and the RD school does not have an earlier deadline for scholarships or other programs of interest.
Also, if the RD school is really rolling admission, then it should be applied to as early as possible, since rolling admission schools or their popular majors may fill up early. That also applies if it is rolling for scholarships or other programs of interest.
If the RD school offers EA (without a restriction that conflicts with your ED or EA applications), then it is generally better to apply EA, for reasons similar to applying to rolling admission schools as early as possible.