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Which of the following is true about using inheritance in software engineering?

a. Common attributes and behaviors should be factored out of closely related classes and placed into a base class from which the original classes can now inherit. b. It is best to create a huge class library to make it easy for a client to find the most appropriate class for his or her needs. c. A class produced through inheritance should be as large as possible to fully encompass all of the functionality it should offer. d. The standard C++ libraries that are shipped with C++ compilers are usually enough to accomplish anything an application might need to do.

Which of the following are correct declarations of iterators for STL containers? You may assume that the proper header has been included and that a using directive makes the names from namespace std available.

a) ``` vector::iterator vecIterator; ``` b) ``` list::iterator listIterator; ``` c) ``` deque::iterator dequeIterator; ``` d) ``` list::iterator listIterator; ```