What Is the Necessary Condition for an Accused Person to Be

What is the necessary condition for an accused person to be found guilty by a jury?

A) At least half the jurors have to find the defendant guilty of the crime.
B) All the jurors have to unanimously agree that the defendant is guilty of the crime.
C) Only a majority of the jurors need to find the defendant guilty of the crime.
D) The jury's guilty verdict has to be approved by the presiding judge.