Consider the following algorithm that processes user input:
1 OUTPUT "Do you agree? (Yes/No): "
2 INPUT response
3 IF ((response == "Yes") OR (response == "No")) THEN
4 IF (response == "Yes") THEN
5 OUTPUT "Agreed"
6 ELSE
7 IF (response == "No") THEN
8 OUTPUT "Disagreed"
9 END IF
10 END IF
11 ELSE
12 OUTPUT "Invalid response"
13 END IF
Give one reason why the selection statement on line 7 is not required.