The weights of 4 boxes are 90, 30, 20 and 50 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 90, 30, 20 and 50 kilograms. Which of the f

1.	The weights of 4 boxes are 90, 30, 20 and 50 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.	190
B.	170
C.	100
D.	150
Answer» E.