An LCtank circuit resonates at a frequency ‘$$f_r$$’. If the temperature coefficient of permittivity of the dielectric material used in the Capacitance is 6 ppm/$$^\circ C$$, then what is the temperature coefficient of frequency‘$$f_r$$’.

A

-3 ppm/$$^\circ C$$

B

-6 ppm/$$^\circ C$$

C

3 ppm/$$^\circ C$$

D

6 ppm/$$^\circ C$$