There is method by which one currency is bought, sold or valued in terms of other currencies, gold or accounting units such as the Special Drawing Right of IMF. What is it called ?

There is method by which one currency is bought, sold or valued in terms of other currencies, gold or accounting units such as the Special Drawing Right of IMF. What is it called ?

A. Currency exchange
B. Currency value
C. Currency value
D. Exchange rate

What is Demand note ?

What is Demand note ?

A. Draft payable in lawful money upon demand
B. Cheque payable in lawful money upon demand
C. Security payable in lawful money upon demand
D. Term deposit payable in lawful money upon demand