Peter's Painting Pty Ltd purchased $900 paint (cash paid) from Fluffy Dog Paint Suppliers Co. The original value of the paint was $1000 but Peter is a frequent customer so Fluffy Dog always gives Peter a 10% discount. You are the accountant for Peter's Painting Pty Ltd. The $100 discount will be recorded in the:

a. Purchase journal

b. Cash Payment Journal

c. General Journal

d. None of the above