$i.$ Six codons do not code for any amino acid.
$ii.$ Codon is read in $mRNA$ in a contiguous fashion.
$iii.$ Three codons function as stop codons.
$iv.$ The initiation codon $AUG$ codes for methionine.
- ✓$(i) \;only$
- B$(ii)\; only$
- C$(i), (ii) \;and \;(iv)$
- D$(i), (ii) \;and \;(iii)$