QUESTION 1 Select ALL Terminals in the following BNF rules: -> identifier identifier, > if then identifier if stmt then o stmt ident_list logic expr -> QUESTION 2 I const The following grammar S ambiguous: O True False QUESTION 3 Questions (3-8) consider the following grammar. Exp -> GoodNum | Exp + Exp | Exp * Exp GoodNum -> NZDigit Num | Digit Num -> Num Digit Digit Digit -> NZDigit | 0 NZDigit -> 1|2|3|4|5| 6 | 7 | 8 | 9 Is 20 + 20 * 20 a valid string in this grammar. O True O False QUESTION 4 Is 20 + 02 a valid string in the above grammar. O True O False