Zenephia Corp. accepted a nine-month note receivable from a customer on October 1, 2008. If Zenephia has an accounting period which ends on December 31, 2008, when would it most likely recognize interest revenue from the note?

a. on December 31, 2008 only

b. on July 1, 2009 only

c. on December 31, 2008 and June 30, 2009

d. on October 1, 2008