A current of $$i = 6 + 10 \sin (100 \pi t) + 20 \sin (200 \pi t)$$ is flowing through a series combination of a PMMC and moving iron instrument. Ratio of the two currents as registered by the M.I. and PMMC meter is

A

2.63

B

1.81

C

3.11

D

2.82