In the C++ code snippet shown below, what is the type of obj declared on line 3? 1 int words = 6; 2 std::vector v{ new std::string [words] { "this","that", "and", "the", "o ther", "thing" } }; 3 for (auto obj = v.begin(); obj = v.end(); ++obj) 4 for (auto p = 0; p < wor ds; ++p) 5 [p] < < " "; std::cout < < (*obj) an iterator an int a pointer a reference