D. RUNNING
Running is always successful in a preemptive attack, and never possible in unrunnable battles.
Running is successful if:
Luck > 0...[Level + 15]
However, running is bugged on the NES and it loads something else instead of the runner's level:
Slot 1: Slot 3's Status byte
Slot 2: Slot 4's Status byte
Slot 3: Identifier for entity that attacks third, either 0-8 or 128-131
Slot 4: Depending on the one's digit of Slot 4's HP, 128-137
So, someone in Slot 1 or 2 will usually be able to run if their Luck is 15 or higher and the character in slot 3 or 4 has normal status.
Running was supposed to have been fixed on the Origins version, but it succeeds much less frequently than one would expect given the formula above,and without apparent regard for luck. It appears that running is bugged in a different, unknown way on Origins.