The Concept of Subrogation Applies to the Liability of a Guarantor

The concept of subrogation applies to the liability of a guarantor under a loan guarantee. Under the concept of subrogation:

A) the lender can sue the guarantor if there is default by the borrower under the loan
B) the lender must attempt to collect from the borrower before pursuing the guarantor for payment of the loan
C) the lender must attempt to realize on any security for the loan before claiming from the guarantor
D) the guarantor that compensates a lender takes over the right of the lender to sue the borrower
E) none of the above.