Bob Loans His Car to Norm, and Norm Wrecks the Car

Bob loans his car to Norm, and Norm wrecks the car. Both Bob and Norm have PAP's on their owned vehicles, and both men have purchased all four major coverages (A, B, C and D) on their automobiles. Whose policy will pay for this loss on a PRIMARY basis?

A) Bob's
B) Norm's
C) They'll both be primary and will share the loss equally.
D) Neither policy will pay on a primary basis because the loss is not covered.