Your 5.5% projection was for the entire 2018 calendar year—not for ENTA's FY1Q18, which was part of calendar 2017.
I think that is more accurate to say that my prediction was for the 9/30/18 fiscal year, since that is what the expense guidance covered. So the 4.5%/5.5% is a part of that year. You are correct that is was not for the prior quarter alone.