Consider the following four statements $(a-d)$ and select the option which includes all the correct ones only $:-$
$(a)$ Transcription and translation can be coupled in bacteria.
$(b)$ The split gene arrangements represent the advanced feature of the genome.
$(c)$ The process of splicing represents the dominance of $\text{RNA-}$world.
$(d)$ The presence of introns in split gene is reminiscent of antiquity.

• A
  $(a), (b),$ and $(d)$
• B
  $(a), (b),$ and $(c)$
• C
  $(a), (c),$ and $(d)$
• D
  $(b), (c),$ and $(d)$