The Payment of Chick's Debt to Diamond Is Guaranteed by Chick's

The payment of Chick's debt to Diamond is guaranteed by Chick's collection of eight restored autos. Their agreement describes Chick's subject property by serial number. To establish Diamond's interest, this is​

A) ​not sufficient because it is too specific.
B) ​not sufficient if it matches the description in the financing statement.
C) ​sufficient if it accurately describes the parties' agreement.
D) ​not sufficient without an added description of the autos' other identifying characteristics.