With reference to factors affecting the rate of photosynthesis, which of the following statement is not correct?

Light saturation for $\displaystyle \mathrm{CO}_2$ fixation occurs at $\displaystyle 10$% of full sunlight

Increasing atmospheric $\displaystyle \mathrm{CO}_2$ concentration up to $\displaystyle 0.05$% can enhance $\displaystyle \mathrm{CO}_2$ fixation rate

$\displaystyle \mathrm{C}_3$ plants respond to higher temperature with enhanced photosynthesis while $\displaystyle \mathrm{C}_4$ plants have much lower temperature optimum

Tomato is a greenhouse crop which can be grown in $\displaystyle \mathrm{CO}_2$ - enriched atmosphere for higher yield