Closest answer, don’t worry if it’s not exactly one of the given answers.
You don’t know if they’ve used 2C or 1.65 or 1.98 and 30’ or 25’ and if they’ve rounded up or down.
These are fun to do on the back of a paper napkin but in real life you use tables to reduce the possibility of errors.
That is if you fly analog piston aircraft.
Anything bigger and it’s provided for you.
Pretty much.