Refer to the following diagram.
Ken read the above advertisement and bought a new mobile phone by installments. In this payment, which of the following functions did money perform?
(1) store of value
(2) unit of account
(3) standard of deferred payment
A. (1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D. (1), (2) and (3)