If the units of force, energy and velocity are respectively $10\, N, 100\, J, 5\, m/s$, then the units of length, mass and time will be
- A$10\, m, 5 \,kg, 1\, sec$
- B$10\, m, 4 \,kg, 2\, sec$
- C$10\, m, 4 \,kg, 0.5\, sec$
- D$20\, m, 5 \,kg, 2\, sec$
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