Fix the error and re-write the code: #include ; int main()  { float radius, area,    float circumference;  printf("To calculate the radius & circumference of a circle: ");  scanf("Enter the radius of the circle: %f", &radius);   area == 3.14 * radius * radius;   circumference = 2 * 3.14 * radius;   printf("\nThe area of the circle is %lf", area);   printf("\nThe circumference of the circle is %lf", circumference);   return 0;  }

Which of the following statements is false? a. a class can directly inherit from class object. b. if the class you're inheriting from declares instance variables as private, the inherited class can access those instance variables directly. c. a class's instance variables are normally declared private to enforce good software engineering. d. it's often much more efficient to create a class by inheriting from a similar class than to create the class by writing every line of code the new class requires.