The correct answer is C — No benefit to bailee. A bailee is a person or organization that temporarily has possession or custody of another person's property. A commercial storage facility holding the insured's stock is therefore functioning as a bailee.

The commercial property condition commonly called No Benefit to Bailee prevents the insurance purchased by the property owner from directly or indirectly benefiting a person or organization merely because that party has custody of the covered property. Court decisions quoting standard commercial property wording state that a person or organization having custody of covered property does not benefit from the insured's property insurance.

The provision preserves the insurer's ability, where appropriate, to pursue recovery against a negligent bailee after paying the insured. Without such wording, a bailee might attempt to rely on the owner's insurance as protection against its own responsibility.

Liberalization automatically broadens coverage when specified policy changes occur. A mortgage clause protects qualifying mortgagees. Assignment concerns transfer of policy rights and generally requires insurer consent.

The Series 17-70 outline tests Commercial Property Conditions, Covered Property, loss conditions, subrogation concepts, and common policy provisions.

Thus, C is the precise answer.