If the units of energy, force, and velocity are 50 J, 5 N, and 2 m/s, what will be the unit of mass, length, and time?
a) Mass: 10 kg, Length: 20 m, Time: 0.4 s
b) Mass: 5 kg, Length: 25 m, Time: 0.5 s
c) Mass: 25 kg, Length: 10 m, Time: 0.25 s
d) Mass: 2.5 kg, Length: 100 m, Time: 1 s