Look at the Following Code

question 51

Multiple Choice

Look at the following code. Line 1 public class ClassA
Line 2 {
Line 3 public ClassA() {}
Line 4 public void method1(int a) {}
Line 5 }
Line 6 public class ClassB extends ClassA
Line 7 {
Line 8 public ClassB() {}
Line 9 public void method1() {}
Line 10 }
Line 11 public class ClassC extends ClassB
Line 12 {
Line 13 public ClassC() {}
Line 14 public void method1() {}
Line 15 }
Which method will be executed as a result of the following statements?
ClassB item1 = new ClassA() ;
Item1.method1() ;

• A) Line 4
• B) Line 9
• C) Line 14
• D) This is an error and will cause the program to crash.

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Definitions:

Variable Costs

Expenses that fluctuate in direct proportion to production levels or output, including labor and materials.

Short-run Supply Curve

A graphical representation of the quantity of goods a firm is willing and able to supply to the market at different prices, over a short period where at least one input is fixed.

Marginal Cost

The financial commitment needed for the creation of an additional unit of a product or service.

Fixed Cost

Expenses that do not vary with the level of production or sales, such as rent, salaries, or insurance costs.