In the Lassaigne’s test for the detectio...

In the Lassaigne’s test for the detection of sulphur, the purple colour is due to the formation of

A

`Na_4[Fe(CN)_5NOS]`

B

`Na_3[Fe(CN)_5S]`

C

`Na_2[Fe(CN)_5NOS]`

D

`Na_3[Fe(CN)_6]`

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