1. Create an application named Medicine that instantiates objects of two classes named Doctor and Specialist and that demonstrates all their methods. Create a class named Doctor that includes fields for a name (string), age of practice (int), and salary (double) and properties for each field. Include a protected field for salary and virtual Salary property. The set accessor of the Salary property needs to be written so that no Doctor's salary is ever set to less than 120000. Include a ToString() method that returns a string constructed from the return value of the object's GetType() method and the values of the fields