The weights of 4 boxes are 20, 90, 40 and 60 kilograms. Which of the following cannot be the total weight,in kilograms, of any combination of theseÂ boxes and in a combination a box can be used only once?

The weights of 4 boxes are 20, 90, 40 and 60 kilograms. Which of the f

1.	The weights of 4 boxes are 20, 90, 40 and 60 kilograms. Which of the following cannot be the total weight,in kilograms, of any combination of theseÂ boxes and in a combination a box can be used only once?
A.	210
B.	170
C.	190
D.	200
Answer» E.