There are three modes for phytochrome responses. These responses can be distinguished by the amount of light required. Choose the correct statements about the different phytochrome responses.
P. VLFRs are activated by extremely low light intensities.
Q. HIR does not show red and far-red photoreversibility.
R. VLFR does not obey the law of reciprocity.
S. Classical red and far-red photoreversible responses of phytochromes are example of LFRS.