Which of the following would not be a limiting factor in photosynthesis?

Which of the following would not be a limiting factor in photosynthesis? Explain giving example
(i) ${{CO}_{2}}$ (ii) Oxygen
(iii) Light (iv) Chlorophyll

(iv) Chlorophyll would not act as a limiting factor in photosynthesis, e.g., Sunloving plants contain less chlorophyll as compared to shade loving plants hut the rate of photosynthesis in bright light is much higher in sunloving plants than is shadeloving plants.