In plants, the energy of sunlight is first absorbed by the pigments present in their leaf cells followed by the fixation of carbon through photosynthesis. Consider the following statements.

P. Chlorophylls a and b are abundant in green plants.

Q. Chlorophylls c and d are found in some protists and cyanobacteria.

R. Out of different types of bacteriochlorophyll, type a is the most widely distributed.

S. Out of different types of bacteriochlorophyll, type b is the most widely distributed.

Which one of the following combination of above statements is correct?