At temperature 332.13 °C
<h3>Further explanation</h3>
Charles's Law stated that :
When the gas pressure is kept constant, the gas volume is proportional to the temperature

T₁ = 89 °C=89+273=362 K
V₁ = 0.67 L
V₂ = 1.12 L

B because if more soot comes then the darker they will get.