Correct Option: A

Special drawing rights (SDRs) are supplementary foreign exchange reserve assets defined and maintained by the International Monetary Fund (IMF).Not a currency, SDRs instead represent a claim to currency held by IMF member countries for which they may be exchanged. As they can only be exchanged for euros, Japanese yen, pounds sterling, or US dollars, SDRs may actually represent a potential claim on IMF member countries’ non-gold foreign exchange reserve assets, which are usually held in those currencies.