Briefly describe a reasonable tectonic or other mechanism for these evolutionary QFL trends (note that any intermediate phases are omitted): Trend A Initial: Terminal: QFL%Q: 100 QFL%Q: 0 QFL%F: 0 QFL%F: 100 QFL%L: 0 QFL%L: 0 Hypothesis: Trend B Initial: QFL%Q: 33 QFL%F: 34 QFL%L: 33 Terminal: QFL%Q: 0 QFL%F: 20 QFL%L: 80 Hypothesis: Trend C Initial: QFL%Q: 70 QFL%F: 10 Terminal: QFL%Q: 75 QFL%F: 0 QFL%L: 20 QFL%L: 25 Hypothesis: Note that LmLvLs and other types of sand-composition data have been omitted from these trends. Select any one of these three hypotheses, and describe how the selected hypothesis could be tested conclusively using additional sand-composition data