If A B C, can we say that B c A? Why? Prove if this is true or provide an example if this is false. (b) If A B C, can we say that C B- A? Why? Prove if this is true or provide an example if this is false. (c) If A that C A B? y? Prove if this is true or provide an example if this is false. B C, can we say (d) If A B = C, can we say that A C- B? Why? Prove if this is true or provide an example if this is false