The correct answer is: C. Both A and B
A promissory note is a written promise to pay a certain amount of money to another person or entity at a specified time. Bank notes and currency notes are both types of money, but they are not promissory notes.
A bank note is a type of paper money that is issued by a bank. It is a promise from the bank to pay the bearer of the note the amount of money that is printed on the note. Currency notes are also a type of paper money, but they are issued by a government. They are a promise from the government to pay the bearer of the note the amount of money that is printed on the note.
Both bank notes and currency notes are legal tender, which means that they are accepted as payment for goods and services. However, they are not promissory notes. A promissory note is a promise to pay a certain amount of money, while a bank note or currency note is simply a piece of paper that is worth the amount of money that is printed on it.