Q: I am verifying the answers generated by an automatic system to the following question: how long is a flat membrane roof good for? Suggested answer: Water from some flat roofs such as on garden sheds sometimes flows freely off the edge of a roof, though gutter systems are of advantage in keeping both walls and foundations dry. Should I validate this answer?

Select from the following.
[a]. No.
[b]. Yes.
The answer is:
[a].