The true answer to that question was on the order of three years.
But in reality, only one person knew the true answer to that important question.
Which was the truth but not the true answer to her question.
This doesn't mean it is the true answer because there could be ideas that we haven't thought of yet.
He had the feeling that "yes" was a true answer, if not a complete one.
That was the true and convincing answer, not the other.
In fact, a true answer might not be brought before 10 years.
He didn't know at that moment what the true answer was.
Only each particular man knows the true answer to that question.
But the true answer is not as interesting and far more technical.