Which of the following statements is $\textbf{TRUE}$?
- For all sets $A, B$, and $C, A-(B-C)=(A-B)-C$.
- For all sets $A, B$, and $C,(A-B) \cap(C-B)=(A \cap C)-B$.
- For all sets $A, B$, and $C,(A-B) \cap(C-B)=A-(B \cup C)$.
- For all sets $A, B$, and $C$, if $A \cap C=B \cap C$ then $A=B$.