Answer:
It is likely to change because experiments may reveal new information.
Step-by-step explanation:
First of all, the question is about a new theory. Remember that a theory is different from a law, because a theory is a hypothesis that it's not ben totally proven yet in different contexts. On the other hand, a law represents a phenomenos that's always true, that is, in different contexts can be reproduced.
So, if Chemists develop a new theory, that means there are needed more observations to determined if their theory can actually be a nature law.
Having said that, the most probably outcome is that the theory changes, because while scientists are studying the theory they will discover new aspects and variables that will change continuosly their theory, in order to become a law.
Therefore, the right answer here is the first choice.