Which of the following statements accurately describes ${\mathrm{C}}_3$ plants?

The photosynthesis rate in ${\mathrm{C}}_3$ plants is limited by current atmospheric ${\mathrm{CO}}_2$levels.

In ${\mathrm{C}}_3$ plants, photorespiration reaches its peak under low light intensity.

${\mathrm{C}}_3$ plants reach their maximum photosynthesis rate at temperatures above $35°\mathrm{C}.$

The rate of photosynthesis in  ${\mathrm{C}}_3$ plants is unaffected by variations in ${\mathrm{CO}}_2 \mathrm{or} {\mathrm{O}}_2$ levels.