Consider the equation $$H = \frac{x^p \epsilon^q E^r}{t^s}$$
Where $$H$$ = magnetic field; $$E$$ = electric field, $$\epsilon$$ = permittivity, $$x$$ = distance, $$t$$ = time. The values of $$p, q, r$$ and $$s$$ respectively are :

A

1, 1, 1, 1

B

$$-1, 1, 2, 1$$

C

$$1, -1, -2, 1$$

D

$$-1, -2, -2, 1$$