With regards to C++ programming, please assist

Given the following program, which of the statements concerning it are true? (5 marks) (a) An in-place transformation can be used instead of storing the results in word_lengths. (b) The transform function does not call the calculate_ length function when the iterator moving over the range is equal to: end (words). (c) The following line of code is equivalent to that on line 6 : auto word_lengths = vector { words. size ()}; (d) calculate_length is known as a function object. (e) The implementation of the transform function does not use vector : : push_back