Consider the following grammar where S, A and B are non-terminals and (a, b, x, y) is the set of terminals (comma is not included). S is the starting symbol. -- 1. SAxy 2. SBxy 3. A a b. B b a- Show the DFA of LR(0). b- Create the parsing table of LR(0). c- Is the grammar LR(0)? Explain. is the decrement operator.