An amplitude modulated signal is given by $$V(t) = 10[1 + 0.3 \cos(2.2 \times 10^4 t)] \sin(5.5 \times 10^5 t)$$. Here t is in seconds. The sideband frequencies (in kHz) are, [Given $$\pi = 22/7$$]

A

1785 and 1715

B

178.5 and 171.5

C

89.25 and 85.75

D

892.5 and 857.5