A charge 'q' enters in a region of uniform magnetic field \(\vec B\) with a velocity (4î - 7ĵ) m/s and experiences a force (5î - Cĵ) N. The value of C is -
1
\( \frac{10}{3} \)
2
\(\frac{20}{7} \)
3
\(\frac{\sqrt{65}}{5}\)
4
Cannot be determined as values of q and B are not given.