Which style in the accompanying figure represents the scroll overflow style?

Which of the following is an example of an exception?

a) a statement does not contain a semicolon at the end b) an array subscript in a program goes out of range c) an algorithm that converts a temperature in Celsius to Fahrenheit displays the wrong results d) a program expects a positive number but reads -23

What is the basic algorithm used for external sorting?

a. finding the median b. merging c. selection d. all of the above e. none of (a), (b), and (c)