What does a mutable member of a class mean?

A) A member that is global throughout the class

B) A member that can be updated even if it a member of constant object

C) A member that can never be changed

D) A member that can be updated only if it not a member of constant object

Correct Answer : A member that can be updated even if it a member of constant object

Explanation : Mutable members are those which can be updated even if it a member of a constant object. You can change their value even from a constant member function of that class.