Mr. Traveler needs money to go on a trip. He possesses a $10,000 note and T.D. on the Mayor's farm. Mr. Banks offers to loan Mr. Traveler the $4,000 he needs, providing he can hold the $10,000 note and T.D. as security. If all agree, this would be an example of a:

a. real chattel agreement.
b. purchase money trust deed agreement.
c. subordination agreement.
d. negotiated pledge agreement.