Len Signs a Note "Payable to the Order of Account

Multiple Choice

Len signs a note "payable to the order of Account Collection Agency." Unless Len has a valid defense against payment, his liability on this note is​

A) ​immediate.
B) ​imposed only after payment is demanded.
C) ​postponed until the note is dishonored by the payee.
D) ​suspended until payment is due.