1. Objects of a super class can always be assigned to a subclass reference.   True   False   2. Objects of a subclass can be assigned to a super class reference.   True   False   3. The "switch" selection structure must end with the default case.   True   False   4. consider the statement "x = (a > b) ? a : b"; then the value of x is 27, if a = 18 and b = 27.   True   False   5. The expression (y >= z && a == b) is evaluated by first evaluating the expression y >= z, and then evaluating a == b.   True   False   6. A break statement must always be present in the default case of a "switch" selection structure.   True   False   7. For the expression (y >= z && a == b) to be true, at least one of (y >= z) and (a == b) must be true.   True   False