Answer: D. The law would not enforce Jane's promise, as it does not have a lawful purpose
Explanation: This agreement between Shelly and Jane is illegal because it is a stolen goods. In the question it is not stated that any contract was concluded except in the options offered. Even if there were any contract it would be completely invalid, because if the whole thing were to end up in court and the origin of the goods were determined, the question is what kind of power such a contract will have. It is obvious that Jane promised to buy the goods. Promise as such is not subject to legal coercion and would not be enforced.