You are recording partial interval data for hand flapping across 30-second intervals. If the client hand flaps for 5 seconds in the beginning and again for 3 seconds at the end of the same interval, how do you record that interval?
A. Mark as occurrence because the behavior happened at any time
B. Mark as non-occurrence because it did not last the whole interval
C. Record duration since two separate instances occurred
D. Split the interval into two and record both separately