Entangled in bad faith

In a previous post I wrote about Poquiz flummoxing me. On page 290 of De Leon's Comments and Cases on Sales and Lease, 2011 Edition we have this flummoxing sentence:

There is more than one way to untangle this which would get you a good grade in the Legal Writing class of Prof. Escobar:

1. It is upon those who allege the bad faith on the part of the possessor that the burden of proof rests.
2. Upon those who allege the bad faith on the part of the possessor rests the burden of proof.
3. The burden of proof rests upon those who allege the bad faith on the part of the possessor.