An angle modulated signal with carrier frequency $$\omega_{c} = 2 \pi \times 10^{5}$$ is described by the equation $$s(t) = 10 \cos (\omega_{c} t + 5 \sin(3000 \pi t) + 10 \sin (2000 \pi t))$$. What is the frequency deviation $$\triangle$$ f ?

A

12387.32 Hz

B

17500 Hz

C

20000 Hz

D

15000 Hz