Biology · Plant Physiology

Consider the following established experimental observations regarding the photoperiodic regulation of flowering in Short-Day Plants (SDP) and Long-Day Plants (LDP): Observations: A. A short day followed by a critical long dark period triggers flowering in SDP, but prevents flowering in LDP. B. A long day followed by a short dark period prevents flowering in SDP, but triggers flowering in LDP. C. If the critical long dark period required by an SDP is interrupted by a brief flash of red light, flowering is induced in the SDP. D. If the short dark period of an LDP is interrupted by a flash of red light, flowering is inhibited in the LDP. E. If the critical long dark period of an SDP is interrupted by a flash of red light followed immediately by a flash of far-red light, the inhibitory effect of red light is reversed and the SDP flowers. Which one of the following options represents the combination of all correct photoperiodic responses?