This question is a little confusing. We believe the JAA/CAA definition of EGT for this question comes from a book produced by Rolls Royce on Jet engines.
The book does not state EGT is measured at the HP turbine outlet but is does show a picture of a thermocouple located between the HP turbine and LP turbine which we believe is the reason this question defines EGT as being HP turbine outlet temperature.
The names given to the location of the temperature sensors are in many cases type specific.

We have appealed this question in the past but we believe the question is still in the current question bank.