1. Ifthe precondition fails, it is a good idea to write a useful error message and then halt the program wh is the program halted? o A. The function's memory requires have become exponential (or worse). o B. The function is no longer guaranteed to make the post-condition true. o C. Most operating systems forbid continuation o D. The function's running time has become exponential (or worse). 2. Express the formula n*(n+ 4) +64logn using big-O notation: o A. O(logn) o B. 0(4n) o C. O(n2) o D. O(n2+4n+64logn) o E. None of the above 3. Why is it important to test boundary values when testing programs? o A. Debuggers are easier to use when testing boundary values. o B. The correct execution of a function on all boundary values proves a function is correct o C. Calculating by hand, it's easy to find the right answers for boundary values. o D. In practice, a large proportion of errors arise from boundary values. 4. What is the common pattern of class definitions that is used in our Data Structure course? o o o A. Member functions and member variables are both private. B. Member functions and member variables are both public. C. Member functions are private, and member variables are public