Carbongene has $X\%$ of $CO_2$ and is used as an antidote for poisoning of $Y.$ Then,$X$ and $Y$ are

• A
  $X = 95\%$ and $Y = \text{lead poisoning}$
• B
  $X = 5\%$ and $Y = CO \text{ poisoning}$
• C
  $X = 30\%$ and $Y = CO_2 \text{ poisoning}$
• D
  $X = 45\%$ and $Y = CO \text{ poisoning}$