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When sodium hydrogen carbonate is added to ethanoic acid a gas evolves. Consider the following statements about the gas evolved?

• It turns lime water milky.
• It is evolved with a brisk effervescence.
• It has a smell of burning sulphur.
• It is also a by $-$ product of respiration.

The correct statements are:

• A
  $(A)$ and $(B)$ only.
• B
  $(B)$ and $(D)$ only.
• C
  $(A), (C)$ and $(D)$.
• ✓
  $(A), (B)$ and $(D).$