___________ : when the value of a nation's currency is allowed to fluctuate according to the foreign exchange market.

Agold standard

Bfixed exchange rate

Ccurrency calculation

Dfloating exchange rate user: the two major types of transactions that affect the international flow of money are:

Abalance of payments; balance of credits

Bdebits; credits

Ctrade in goods and services; capital flows

Dflows of financial capital; flows of payments