Output of a truck is 4500 J and its efficiency is 50%, input energy provided to truck is

Output of a truck is 4500 J and its efficiency is 50%, inp

1.	Output of a truck is 4500 J and its efficiency is 50%, input energy provided to truck is
A.	5000 J
B.	900 J
C.	9000 J
D.	500 J
Answer» D. 500 J