A.  Write a program to add the contents of a file salary.txt and display the sum of salaries of all employees present in the file. The content of file salary.txt is

B. Write a program to copy the content of one file to another.

C. Write a program to read the content of a Python fi le and display all the lines without

comments

D. Write a function Find_Samllest() which accepts the file name as parameter and reports the

smallest line in the file. The content of file Demo.txt is