The resultant of the following three couples 20 kg force, 0.5 m arm, $ ve sense 30 kg force, 1 m arm, ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be__________________?

A. 10 kg, + ve sense

B. 45 kg, + ve sense

C. 20 kg, ve sense

D. 10 kg, ve sense

E. 20 kg, + ve sense

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