A court–martial shall announce its findings and sentence to the parties as soon as determined. Except as provided in paragraph (2) of this subsection, if the accused is convicted of an offense in a trial by general or special court–martial, the military judge shall sentence the accused. If the accused is convicted of an offense by general or special court–martial consisting of a military judge and members and the accused elects sentencing by members under § 13A–504 of this title, the members shall sentence the accused. The sentence determined under this subsection constitutes the sentence of the accused. If the accused is convicted of an offense in a trial by summary court–martial, the court–martial shall sentence the accused.