If P --> Q is an existing functional dependency, which of the following is NOT an augmented functional dependency? OPA --> O P. X, Y --> Q OP.X --> O Q -->P OP.A-->P Question 7 1 If P.-> --> Q and Q --> P are existing functional dependencies, which of the following are equivalent functional dependencies? OP.X > Q and P. X.-> X O None of the above OP.> Q and Q --> Y OP --> X and P.-> Y O All of the above