thanks for the answers. But IS climb gradient THE SAME as climb angle? Im getting confused here.
Let's say that there is a high obstacle close the end of the runway, near the threshold. You would like to start with flaps rather than clean config. This is because you want to get a better climb angle/climb gradient/angle of climb to clear the obstacle. You will climb steeper than with clean config. Is it right?
That's why I answered B.