The weights of 4 boxes are 90, 40, 80 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, 40, 80 and 50 kilograms. Which of the f

1.	The weights of 4 boxes are 90, 40, 80 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.	200
B.	260
C.	180
D.	170
Answer» B. 260