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

A

$$C_3$$ plants responds to higher temperatures with enhanced photosynthesis while $$C_4$$ plants have much lower temperature optimum

B

Tomato is a greenhouse crop which can be grown in $$CO_2$$ - enriched atmosphere for higher yield

C

Light saturation for $$CO_2$$ fixation occurs at 10% of full sunlight

D

Increasing atmospheric $$CO_2$$ concentration upto 0.05% can enhance $$CO_2$$ fixation rate