_______ nation has provisionally approved dexamethasone for COVID treatment ?

a) Japan
b) South Korea
c) Taiwan
d) None of these

Taiwan has provisionally approved the use of dexamethasone to treat COVID-19 infection. The approval comes as the nation faces a shortfall of the antiviral drug remdesivir after the United States bought nearly all global supplies. Dexamethasone is a cheap and widely-used steroid.