How does the best angle of climb and best rate of climb vary with increasing altitude for an aeroplane with a normal aspirated piston engine?

Question

Question ATPL - Airline Transport Pilot license - Performance

QuizVDS · Accepted Answer

Both decrease

QuizVDS · Answer

Both increase

QuizVDS · Answer

Best angle of climb increases while best rate of climb decreases

QuizVDS · Answer

Best angle of climb decreases while best rate of climb increases

Id 2 - ATPL - How does the best angle of climb and best rate of climb vary with increasing altitude for an aeroplane with a normal aspirated piston engine?