Which of the following statements are correct?
$i. r-RNA$ provides the template for synthesis of proteins.
$ii. t-RNA$ brings amino acids and reads the genetic code.
$iii. RNA$ polymerase binds to promoter and initiates transcription.
$iv. A$ segment of $DNA$ coding for a polypeptide is called an intron.

• A
  $(i) \text{ and } (iii)$
• B
  $(i) \text{ and } (ii)$
• C
  $(i), (ii) \text{ and } (iii)$
• D
  $(ii) \text{ and } (iii)$