Which of the following accurately describes improvisation?

A)And actor or group of actors is given a situation and sometimes characters, and they
act it out after some rehearsal, following a script as they work their way to a solid
conclusion.
B)An actor or group of actors is given a situation and sometimes character, and they
act it out spontaneously, making up the dialogue and action as they work their way to
a solid conclusion.
C)An actor or groups of actors is given a situation and sometimes character, and they
act it out after some rehearsal, making up the dialogue and action as they work their
way to a conclusion.
D)An actor or group of actors is given a situation and sometimes characters, and they
act it out spontaneously, following a script as they work their way to a solid
conclusion.