Which of the following is false?

Question

a. A string can be defined to store any data type.
b. Class string provides bounds checking in its member function at.
c. Class string’s overloaded [] operator returns a vector element as an rvalue or an lvalue, depending on the context.
d. An exception is thrown if the argument to string’s at member function is an invalid subscript.

Answer 1

a. A string can be defined to store any data type.