Given below are two statements:

Statement (I): In plants of shade and dense forest, light is a limiting factor for photosynthesis.
Statement (II): There is a linear relationship between the incident light and CO₂ fixation rates at higher light intensities.

In light of the above statements, choose the most appropriate answer from the options given below.

Statement (A): In plants of shade and dense forest light is a limiting factor for photosynthesis.
Statement (B): There is a linear relationship between the incident light and CO₂ fixation rates at lower light intensities.

The relationship between incident light and CO₂ fixation rates is not always linear, especially at higher light intensities. 

The rate of photosynthesis may reach a point of saturation where further increases in light intensity do not result in proportional increases in CO₂ fixation. Instead, other factors such as the availability of enzymes or other resources may become limiting.