Suppose you wrote a program that reads data from$$cin$.$ You are now required to reimplement it so that you can read data from a file. You are considering the following changes.

I. Declare an$$ifstream$$variable$$in$\_$file

II$.$ Replace all occurrences of$$cin$$with$$in$\_$file

III. Replace all occurrences of$>>$and$$get$\_$line$$with the appropriate operations for$$ifstream$$objects

What changes do you need to make?

Suppose you wrote a program that reads data from$$cin$.$ You are now required to reimplement it so that you can read data from a file. You are considering the following changes.

I. Declare an$$ifstream$$variable$$in$\_$file

II$.$ Replace all occurrences of$$cin$$with$$in$\_$file

III. Replace all occurrences of$>>$and$$get$\_$line$$with the appropriate operations for$$ifstream$$objects

What changes do you need to make?

I and III

II and III

I, II$,$ and III

I and II