Use the table to answer the question.

Machine Output Work (J) Input Work (J)
A
B
C
D
750
1,000
450
3,000
1,500
4,000
600
5,000
Which machine has the highest efficiency?
(1 point)
• machine B
• machine A
• machine C
• machine D

Machine A has the highest efficiency because it requires the least amount of input work to produce the given output work.