Dot Net Multiple Choice Questions with Answers » Set - 2 » Question No - 10

asp tutorial for beginners

10) Which of the following is incorrect about System.Text.StringBuilder and System.String?
StringBuilder is more efficient when there is a large amount of string manipulation
Strings are immutable, so each time a string is changed, a new instance in memory is created
StringBuilder is mutable; when you modify an instance of the StringBuilder class, you modify the actual string, not a copy
Strings are mutable in .Net