When the altered day-night schedule (similar to that used in Experiment 2) was put in place on days 8, 9, and 10
A. oscillations in per-luc activity were no longer observed
B. peak oscillations occurred at about the same time of day as was observed on days 1, 2, and 3
C. the trough was observed at the beginning of daytime
D. the oscillations in the fly wing reset to the new schedule (days 8,9,10), which was 6 hours later than the original schedule (days 1, 2, 3)