$17-50=-33$, so the answer is $E$. 
Which number has to be subtracted from $17$ in order to obtain $-33$? (Adapted from 2017 Math Kangaroo Problem, Level 7-8, Question \#3) 

- $$-50$$ 
- $$-16$$ 
- $$16$$ 
- $$40$$ 
- $$50$$ 