Traditional medicines derived from the roots of nut-grass (Cyperus rotundus) have been used to treat a variety of ailments, including blood disorders and leprosy. Compound A is the active component in these medicines derived from nut-grass. A synthetic method for making compound A includes an intramolecular SN1 reaction to form a new ring. Identify (circle it) which of two possible starting materials is a better candidate and justify your choice.