Which Statement Accurately Represents the Main Distinction Between Classical and Operant

Which statement accurately represents the main distinction between classical and operant conditioning?

A) Classical conditioning applies to involuntary behavior, whereas operant conditioning applies to voluntary behavior.
B) Classical conditioning applies to voluntary behavior, whereas operant conditioning applies to involuntary behavior.
C) Both these statements reflect valid distinctions between classical and operant conditioning.
D) Neither of these statements reflects a valid distinction between classical and operant conditioning.