What Happened to Louis XVI Following the Establishment of the National

What happened to Louis XVI following the establishment of the National Convention?

A) He died in a tragic accident that brought both sides of the conflict together.
B) He was murdered in secret without due process of law.
C) He was cast into exile and lived out the rest of his life in Britain.
D) He was put on trial and, found guilty of betraying the people, was executed.
E) He was restored to the throne and given a ceremonial role in the Convention.