58. Which of the following statements about the C++ Standard Library is FALSE： (A) The C++ Standard Library is an important part of the C++ “world.” (B) An advantage of using classes and functions from the C++ Standard Library is saving the effort of designing, developing and testing new classes. (C) The C++ Standard Library consists of classes and functions that perform tasks. (D) The C++ Standard Library functions and classes are not included in every C++ implementation